Slim Heart Rate Fitness Tracker Band, 5ATM Waterproof
Track heart rate, steps and activity rings on a color screen, then take the band into the pool or onto the beach. The slim wine red silicone strap sits light on the wrist, and the 5ATM rating keeps it on through swims and splashes.
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Track heart rate, steps and activity rings on a color screen, then take the band into the pool or onto the beach. The slim wine red silicone strap sits light on the wrist, and the 5ATM rating keeps it on through swims and splashes.
Slim sports fitness band with heart rate tracking, 5ATM water resistance and Alipay offline payment in wine red
- tracking daily activity and heart rate without bulky watch
- wearing a tracker while swimming or surfing
- carrying a wallet during workouts
- monitoring fitness goals
Track every workout, even in the water
Stop guessing your heart rate and steps. Wear one slim wine red band from the gym to the pool to the surf, and see your progress on a color screen.
Heart rate, steps and rings on one screen

Heart rate and steps, always on
The heart rate monitor and step counter run on the band itself, and the numbers show on the color display. Check your pulse between sets or after a run without opening your phone. If you want a dedicated heart rate fitness tracker that stays light on the wrist, this is the format.

Built to get wet
The 5ATM rating handles pool swims, splashes and rinse-offs after the beach. Leave it on through the lap session and check the rings when you climb out. It is rated for splash and swim use, so take it off before diving or riding deep surf.

Slim fit, all day
The matte silicone strap is light and flexible, and the ventilated holes let air move under the band during long sessions. The black glossy bezel stays clean-looking after a workout, so the band works with a work outfit as easily as with training gear.
The tracker that gets left behind

The tracker that gets left behind
A bulky watch comes off at the locker room door, and the lap you just swam goes unrecorded. Heart rate and steps disappear with it. You are left guessing how hard you worked.

Everything on one slim band
The band tracks heart rate, steps and activity rings on a color screen, and it is light enough that you stop noticing it. A tap wakes the display, so the numbers are a glance away between sets or laps. It also carries your Alipay payment code, so the wallet can stay in the bag.
Ready for the pool and the surf
The 5ATM rating covers pool swims, splashes and beach sessions. Once the session ends, the rings still show how much you moved that day, and you can rinse the band and carry on with your afternoon.
What to expect as you use it
- First useCharge and pair
Charge the band, pair it with your phone using the app steps, and set a daily step goal so the progress ring has a target to fill.
- Week 1Build the daily habit
Wear it through the day and night to see steps, heart rate and rings update. Adjust the sedentary reminders to fit your work hours.
- 30 daysRead your trends
Review a month of steps and heart rate readings in the app to spot patterns in your workouts and recovery days.
Slim band or sports watch
| This band | Sports watch | Phone only | |
|---|---|---|---|
| Heart rate on the wrist | Yes | Yes | No |
| Slim band profile | Yes | No | Yes |
| Swim-rated 5ATM | Yes | Partial | No |
| Contactless payment code | Yes | Partial | No |
| Activity rings on screen | Yes | Partial | No |
Characteristics
Reviews
Questions and answers
The band pairs with your phone through its companion app, and you follow the setup steps once. Alipay is only needed for the payment feature, where the QR code on the screen is scanned at the register.
The payment code works wherever Alipay is accepted. Before you count on it, check that the shops you visit take Alipay, since that depends on the merchant and not on the band.
The band carries Xiaomi branding and is sold as the Mi Band 4 model. Compare the model name and packaging against the listing before you buy.
It carries a 5ATM water rating, which covers pool swims, splashes and surf sessions. Skip diving and deep-water use, since pressure can damage the seals.
The listing does not give a battery runtime, so check the product details for the exact figure. Charging is quick and simple, and the band is light enough to top up between workouts.
You pay for the heart rate tracking and step counter, and you get a slim band you will actually wear in the water. A sports watch costs more and often comes off for swims, so the band delivers more recorded sessions per dollar.
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