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Xiaomi Mi Band 4

4.5 4.5 out of 5 stars 4,821 ratings
$49.00
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Purchase options and add-ons

Brand Xiaomi
Model Name Mi Band 4
Style Modern
Color Black
Screen Size 0.95 Inches
Special Feature Time Display, Sleep Monitor, Calorie Tracker, Heart Rate Monitor
Shape Rectangular
Target Audience Unisex Adult
Age Range (Description) Adult
Compatible Devices Smartphone

About this item

  • Languages Included English and Chinese. Wristband width 18mm, Adjustable wrist strap length 155-216mm
  • Battery Life: 135mAh battery capacity built in the Mi Band 4, max working time up to 20 days after a full charging.
  • Health Monitoring: Support heart rate monitoring, heart rate alerts, sleep monitoring, idle alerts; Monitoring your health data o matain your healthier body
  • Activity Tracking: Comes with 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, swimming Counting step, distance, calories burned during sports
  • 5ATM Water Resistant: Up to 50 meters water resistant rate, freely to wear Mi Band 4 when running and exercising
  • Display: 0. 95-inch Colorful AMOLED display with 120 x 240 pixels resolution, up to 450 nits screen brightness

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Xiaomi Mi Band 4
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3 Pack Bands for Xiaomi Mi Band 4 & Mi Band 3 Strap, Soft Silicone Replacement Sport Bands Bracelet Strap for Xiaomi Mi Band
$8.99
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Product Description

Xiaomi Mi Band 4 Fitness Tracker

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Xiaomi Mi Band 4

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
4,821 global ratings

Customers say

Customers like the battery life and value of the wearable computer. They say it has a very long battery life, and is good value for money. Customers are also happy with performance, and appearance. However, some customers have reported issues with connectivity and the app. Opinions are mixed on ease of use, quality, and accuracy.

AI-generated from the text of customer reviews

197 customers mention180 positive17 negative

Customers are satisfied with the battery life of the wearable computer. They mention that it has a good battery life, lasting more than 7 days.

"OK so after 21 days I still have 36% battery life. Simply amazing...." Read more

"...The battery actually lasts even *longer* than the company claims (and longer than my husband's FitBit)...." Read more

"...Its best asset is its battery life. It can legitimately go 3+ weeks of continuous use under the right conditions (no heart rate or sleep tracking)...." Read more

"...Battery life is very good: several days of constant use. This is fortunate, since recharging is a little bit of a hassle...." Read more

195 customers mention189 positive6 negative

Customers are satisfied with the value of the wearable computer. They mention that it's an affordable fitness tracker with a very long battery life. Some are impressed with the quality and price. They appreciate the option to change the bands for cheap.

"...choose from on amazon to match your outfits....... its stylish and affordable... I am a watch person and have many watches... I did not want to put..." Read more

"...Overall: great watch for an amazing price!!" Read more

"...I also have the option to change the bands for cheap and it's very easy.The main reason I bought this is for the fitness tracking...." Read more

"...with our purchase and recommend it to anyone looking for a low-price semi-smart watch." Read more

188 customers mention168 positive20 negative

Customers like the performance of the wearable computer. They say it works well, all the features work well, and it's easy to use. Some mention that it does all that it advertises well. That said, most are happy with the performance and quality of the product.

"...The app is excellent and shows you how you did during the course of the day.......Excellent build quality and design... you will stand out in a..." Read more

"...The native app is alright for this (it got much better for this band than it was for the Mi Band 2), but it's the 3rd party apps where this shines...." Read more

"...The timer, weather, and alarm features work fine...." Read more

"...Which work perfect for what I need. I paired the Mi Band 4 with the Google Fit app and it tracks my runs really well...." Read more

89 customers mention89 positive0 negative

Customers are satisfied with the appearance of the wearable computer. For example, they mention it has a beautiful display, style, and beautiful colors and screens. Some are impressed with all the features and look of the product.

"...many bands to choose from on amazon to match your outfits....... its stylish and affordable... I am a watch person and have many watches... I did..." Read more

"...My favorite is Mi Band Tools, which allows for custom app alerts, icons, vibrations, and even Tasker integration for whatever I need to do...." Read more

"...The app allows me to change the look (which is great, because I needed a "large font" for the time)...." Read more

"...Very nice display and you can actually see in out-door and even under sun light with highest brightness...." Read more

250 customers mention145 positive105 negative

Customers are mixed about the accuracy of the wearable computer. Some mention that it tracks their workouts very accurately, while others say that the sleep tracking is very meh and not always accurate.

"...features... I bought it as a tracker not a smartwatch... Tracking is pretty accurate and heart rate on point...." Read more

"...The pulse function is iffy--it lags, sometimes fails to register. Even so, the Band 4 is not bad at tracking sleep...." Read more

"...I also think the pedometer is a bit more accurate than the last watch - none of them are perfect, of course, but this seems pretty close to my..." Read more

"...Even the fitness tracking is good. There's no GPS, but if you keep your phone on you, it will track your run and measure your heart rate well...." Read more

114 customers mention66 positive48 negative

Customers are mixed about the ease of use of the wearable computer. Some mention it's simple to use, easy to navigate, and provides accurate instructions. However, some say the app is extremely basic and not intuitive, making it difficult to navigate and use.

"...The watch is also pretty easy to use, syncs easily and and it's fun to change the watch face..." Read more

"...I have not been able to enter the data manually. The app is not especially clear on how to do that--and a number of other things...." Read more

"...I also have the option to change the bands for cheap and it's very easy.The main reason I bought this is for the fitness tracking...." Read more

"...I do not like the app very much it a bit basic. Like the Samsung app I would like to track calories burned and eaten...." Read more

107 customers mention66 positive41 negative

Customers are mixed about the quality of the wearable computer. Some mention they're impressed with the quality, easy to use, and reliable. They also like that it's durable and brighter, sharper, and color. However, others say that the functions are limited and the features are wasted.

"...proof and soap proof.... swim proof........ you name it.......... its tough...... many bands to choose from on amazon to match your outfits.........." Read more

"...a lot of other low cost trackers, but there are so many lack of features and functions that prevents me to fully enjoy this tracker." Read more

"This is a decent piece of equipment. I would not hesitate to recommend it to someone who is not sure about springing for more expensive devices...." Read more

"...there are plenty of other functions: weather, phone alerts, vibration reminders, if I decide to use them one day..." Read more

74 customers mention18 positive56 negative

Customers are dissatisfied with the connectivity of the wearable computer. They say that the app has not progressed at all, is essentially worthless, and could use some work. They also mention that there are not many apps which sync with it and that the goofy app is minimally useful.

"...The pulse function is iffy--it lags, sometimes fails to register. Even so, the Band 4 is not bad at tracking sleep...." Read more

"...C. There is no sports apps that other trackers provide, such as Tennis, Yoga, Weights...etc. it was bit limited...." Read more

"...The watch is also pretty easy to use, syncs easily and and it's fun to change the watch face..." Read more

"...I realize the app does not have the ability to synced with other apps. With that said I would really like it if could...." Read more

My Apple Watch (Series 3) Is On The Shelf
5 Stars
My Apple Watch (Series 3) Is On The Shelf
This watch has exceeded my expectations in every way. So much so, in fact, that my Apple Watch is back in it's box on the shelf. Most of the reason why, comes down to what I personally want in a smart watch, and that is:NotificationsTimeNice displayWatch face selectionSleep trackingI'm writing this as an iPhone user, on iOS 13.3. IPhone 11.The Apple Watch is absolutely more capable, but it's features are wasted on me. When enabling notifications, I don't want to have to choose whether or not they "mirror" the phone, or whether they don't. To me, mirroring the phone would imply that the same ringtones and notification tones would come from the watch. The Apple Watch is certainly capable of doing that, but that's not what it means. Instead, I get some feeble vibration and a generic sound. So, for example, if I'm napping or listening to music, there's no chance I'm ever going to notice the wimpy Apple notifications. Or, I can choose not to mirror my phone, and then, the notifications come from my phone, not the watch. Wasn't the point to be notified on my watch? That process, the sleep tracking data, and pretty much everything else about the Apple Watch is overkill. Well, except of course for the available watch faces. There are a few, but none really take full advantage of what the watch could display. Want the latest/best faces? Buy a new watch. No thanks.So, contrast that with the Mi Band 4. You enable notifications, and you get notifications - on the watch and your phone. Don't want them on your phone? Flip the "mute" switch. It's simple.Sleep tracking is great. Paints a good picture of your sleep session, without overwhelming you with graphs, charts, etc. It just works. HR data seems accurate. If I needed ultra precision, I'd be under a cardiologist's care. I'm not, so this is perfect for me. Watch faces: the app offers up some nice choice, and if you install AmazTools, you'll get more. If you download (use Safari) watch faces from Amazfitwatchfaces[dot]com and apply them with AmazTools, you'll have access to even more. I'd guess there's hundreds of available watch faces. Not all are English, and not all are 12hr format, but people use the watch all over the world, so that's fair enough. There are still MANY choices. The display is razor sharp (not always on) AMOLED, and getting 20 days on a charge is no problem. The Apple Watch gives me 2 days.Finally, there's the price: $35! Take my money! 😃The only minor inconvenience is that the watch has to be popped out of the band to charge, but there are other inexpensive charging cables available for it. And, it's a once every three week process. No big deal.I'd buy this watch again and again, and can't wait to see what might happen in their next model.I was not paid, compensated, or coerced to write this review. I bought it with my own money.
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Top reviews from the United States

Christopher Henry
5.0 out of 5 stars Battery life is unbelievable... how ?...Just use it as a tracker... buy a smartwatch if you want one
Reviewed in the United States on March 11, 2020
Verified Purchase
OK so after 21 days I still have 36% battery life. Simply amazing. Just keep Bluetooth off and only sync once per day at nights when you take it off. The app is excellent and shows you how you did during the course of the day.......Excellent build quality and design... you will stand out in a crowd. If you want a smart watch then go buy one... this is a tracker and an excellent one too... screen is too small to read notifications anyway so I just keep Bluetooth off... if you get a notification I just pick up your phone... duh.... its always with me and besides who want constant Bluetooth radiation on their wrist.... not me........ so what if I don't get the smartwatch features... I bought it as a tracker not a smartwatch... Tracking is pretty accurate and heart rate on point. Excellent buy..... just dont try to use it as a smartwatch....... it will frustrate you especially with the small screen... at the end of the day your phone is going to be close by.. just pick it up........ I only turn on Bluetooth before I start a run, going to do something where my phone will be in a pocket or not reachable. But turn it off right after.. doing this will get you to 1 month on 1 battery charge... no other tacker in the world can do that....... well I dont know of any...do you ? For the price this is a winner........ hit the screen many times... not a scratch..... water proof and soap proof.... swim proof........ you name it.......... its tough...... many bands to choose from on amazon to match your outfits....... its stylish and affordable... I am a watch person and have many watches... I did not want to put them down just to wear a smartwatch and I dont want to wear a regular watch on one wrist and a smartwatch on the other wrist...... so I got a tracker instead.... which I wear on my free wrist....... it very comfortable and looks different from other trackers out there.........great job Xiaomi
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Christopher Henry
5.0 out of 5 stars Battery life is unbelievable... how ?...Just use it as a tracker... buy a smartwatch if you want one
Reviewed in the United States on March 11, 2020
OK so after 21 days I still have 36% battery life. Simply amazing. Just keep Bluetooth off and only sync once per day at nights when you take it off. The app is excellent and shows you how you did during the course of the day.......Excellent build quality and design... you will stand out in a crowd. If you want a smart watch then go buy one... this is a tracker and an excellent one too... screen is too small to read notifications anyway so I just keep Bluetooth off... if you get a notification I just pick up your phone... duh.... its always with me and besides who want constant Bluetooth radiation on their wrist.... not me........ so what if I don't get the smartwatch features... I bought it as a tracker not a smartwatch... Tracking is pretty accurate and heart rate on point. Excellent buy..... just dont try to use it as a smartwatch....... it will frustrate you especially with the small screen... at the end of the day your phone is going to be close by.. just pick it up........ I only turn on Bluetooth before I start a run, going to do something where my phone will be in a pocket or not reachable. But turn it off right after.. doing this will get you to 1 month on 1 battery charge... no other tacker in the world can do that....... well I dont know of any...do you ? For the price this is a winner........ hit the screen many times... not a scratch..... water proof and soap proof.... swim proof........ you name it.......... its tough...... many bands to choose from on amazon to match your outfits....... its stylish and affordable... I am a watch person and have many watches... I did not want to put them down just to wear a smartwatch and I dont want to wear a regular watch on one wrist and a smartwatch on the other wrist...... so I got a tracker instead.... which I wear on my free wrist....... it very comfortable and looks different from other trackers out there.........great job Xiaomi
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Daniela W.
5.0 out of 5 stars I LOVE this watch!!!!!
Reviewed in the United States on September 12, 2020
Verified Purchase
Before buying this watch, I got another FitBit knockoff watch that at its best (for the first couple weeks) lasted 4 days even though the company touted "long battery life," which was disappointing, and then within a couple months it had to be charged every 36 hours! The constant charging drove me nuts. I was tempted to throw in the towel and pay real $$$ for a real FitBit until I saw this review. I decided to give an off-brand one more shot. I'm glad I did! This one was even cheaper than my first one and it's been amazing! The battery actually lasts even *longer* than the company claims (and longer than my husband's FitBit). Last month it lasted 23 days on a single charge, and today I'm on day 18 and still have 36% charge left. I also think the pedometer is a bit more accurate than the last watch - none of them are perfect, of course, but this seems pretty close to my treadmill's mileage tracker. The stopwatch and timer are a nice bonus (esp. for work & cooking) that don't require you to sync with the phone. You can't set up or change the alarm without syncing with phone, which is a bit annoying, but not a big deal. (If you set a daily alarm - a feature I don't use - you don't need to sync daily.) I really doubt *any* smartwatch can accurately measure pulse or sleep time--if you need accurate data on that, you should use more specialized pulse-tracking equipment or enroll in a sleep study--so I don't use or care about those features much. But the few times I've glanced at them they seem to be in the right ballpark. The watch is also pretty easy to use, syncs easily and and it's fun to change the watch face (although I wish they had larger font for the steps and date, and more professional-looking watch face options instead of just cutesy ones for kids or preteens). Once you download app, be sure to look for "Mi Smart Band 4" option under "Profile" tab - that's where most of the options I care about are, which took me a little while to figure out. Overall: great watch for an amazing price!!
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Brian DiGiorgio
5.0 out of 5 stars The best smart band
Reviewed in the United States on June 17, 2020
Verified Purchase
I was at first skeptical of this more complex model of Mi Band (having come from the simplistic Mi Band 1 and 2 before), but I decided to jump in and see how it was, and my verdict is that this makes all of the right choices to be the best smart band on the market. There is literally no reason to buy any of the other bands that are several times the price because this has them all beat.

Its best asset is its battery life. It can legitimately go 3+ weeks of continuous use under the right conditions (no heart rate or sleep tracking). Compared to a similar Fitbit that has to get charged every 3 days, this is amazing. It's the only thing I've seen approach the original Mi Band in terms of "wear it and forget it" status.

The next best asset is customizability. There's no point in having a big colorful screen if you can't do anything with it, but luckily there is a large custom watch face community that makes countless different options so you're not limited to the lackluster options that manufacturers may leave you with. I have even started making my own with easily available tools.

The reason I love this though is the notification abilities. The native app is alright for this (it got much better for this band than it was for the Mi Band 2), but it's the 3rd party apps where this shines. My favorite is Mi Band Tools, which allows for custom app alerts, icons, vibrations, and even Tasker integration for whatever I need to do.

Even the fitness tracking is good. There's no GPS, but if you keep your phone on you, it will track your run and measure your heart rate well. The normal pedometer is also very accurate. I tried the sleep tracking for a bit and it seemed to work, although it's a little too bulky to sleep with in my opinion.

Overall, this is an amazing purchase and is easily worth several times what they charge for it because it blows $150 smart bands (or $300 smart watches) out of the water.
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Top reviews from other countries

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Ingrid Oliveira
5.0 out of 5 stars Muito boa e bom valor
Reviewed in Brazil on March 22, 2022
Verified Purchase
Gostei, comprei porque fico perdendo a hora do almoço e atrasando meu ponto no trabalho. A função despertador é otima. Tem vários furinhos na pulseira entao mesmo com pulso fininho consigo usar com conforto. Super indico, esta sendo uma ótima aquisição pra mim, bateria dura 3 ou 4 dias. Consigo controlar as musicas que escuto no celular!!
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SALVADOR SANTIAGO
5.0 out of 5 stars Excelente producto
Reviewed in Mexico on September 3, 2021
Verified Purchase
Buen producto
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serena
1.0 out of 5 stars Mi hanno fregato
Reviewed in Italy on April 30, 2023
Verified Purchase
Mi è arrivato un orologio usato tutto rigato già accoppiato..la confezione era senza cellophan e con il sigillo di garanzia tagliato
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serena
1.0 out of 5 stars Mi hanno fregato
Reviewed in Italy on April 30, 2023
Mi è arrivato un orologio usato tutto rigato già accoppiato..la confezione era senza cellophan e con il sigillo di garanzia tagliato
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tatamimie
5.0 out of 5 stars Simple d'utilisation
Reviewed in France on March 25, 2022
Verified Purchase
Pour l'utilisation quotidienne de mes pas, du minuteur, du chronomètre etc... Et idéal avec la balance de la même marque pour calculer sa masse osseuse, sont poids, sa graisse corporel etc...
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Carolina
5.0 out of 5 stars Perfecto
Reviewed in Spain on October 10, 2021
Verified Purchase
Es original, nada de copias. Al principio pensaba que había algún problema por que no encendía al cargarlo por primera vez, pero fue por que lo pusimos en una base de cargador normal. Al ponerlo en el puerto usb del ordenador todo funcionaba correctamente. Así que fantástico. Envío rápido como siempre con amazon prime.
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