XIAOMI Smart Band Active Fitness Tracker

14 day battery life, 2 hour charge time
1.47 inch AMOLED, 360 x 360, 450 nit
No GPS in the GPS field
50 meter water depth, listed waterproof
iOS 12.0+ and Android 8.0+ phones
30 gram weight, 20 millimeter band

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

An AMOLED tracker with a two-week battery and a deep water rating, for daily wear with an iPhone or Android. The app list looks inflated and the cellular entry conflicts with Bluetooth only, so confirm features first.

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ASIN: B0DK6ZC5ZCModel: M2435B1Category: Fitness Trackers

Overview

Pairing over Bluetooth with a phone is how the XIAOMI M2435B1 delivers alarms, reminders and messages to a square AMOLED screen. The case is plastic, the band is silicone and the listing says no GPS.

A bright AMOLED screen and a long battery cover the daily basics. The limitation is a messy listing: a very long app list, a French language entry and a cellular field that does not match the Bluetooth connection.

Who it's for

Daily steps, sleep and heart rate tracking with an iPhone or Android are the setting. Anyone who needs GPS, a cellular connection or a listing they can trust line by line should confirm details with the seller.

Pros and cons

Pros

Bright AMOLED screen
Battery rated in weeks
Deep waterproof depth rating
Wide phone support

Cons

App list looks inflated
Cellular entry conflicts with Bluetooth
Charger not named in the box

Performance notes

An always-on AMOLED screen draws more power than a sleeping one, so battery life depends on the display setting. Heart rate readings come from an optical sensor and need a snug band, and distance without GPS is estimated from motion.

Where it stands among fitness trackers

300 mAh battery capacity: longer than 78% of the fitness trackers we list.
14 days battery average life: longer than 77% of the fitness trackers we list.

From the specs of the 43 fitness trackers we list; not a test result.

Specifications

Dimensions & fit
Brand	XIAOMI
Model	M2435B1
Water Resistance Depth	50 meters
Screen size	1.47 inches
Band Length	220 millimeters
Band Width	20 millimeters
Item Dimensions D X W X H	0.39 x 1.06 x 1.81 inches
Item Weight	30 grams
Item Dimensions	7.87 x 7.87 x 5.51 inches
Capacity & performance
Battery Capacity	300higher than 78% of 28 fitness trackers
Power & efficiency
Battery Average Life	14 dayshigher than 77% of 27 fitness trackers
Battery Charge Time	2 hours
Battery Cell Type	Lithium Polymer
Construction & materials
Band Material Type	Silicone
Case Material Type	Plastic
Color	Black
Compatibility & installation
Compatible Phone Models	iPhone (iOS 12.0 and above), Android (8.0 and above)
Connectivity Technology	Bluetooth
Human Interface Input	Touchscreen
Compatible Devices	Smartphone
RAM Memory Installed	1 MB
Included components
Unit Count	1.0 Count
Warranty & support
Warranty Type	Limited
Other details
Gps Geotagging Functionality	No GPS
Display Type	AMOLED
Resolution	360 x 360
Builtin Media	User Manual
Metrics Measured	Optical Heart Rate Sensor, Accelerometer
Maximum Display Brightness	450 nits
Language	French
Additional Features	Accelerometer, Activity Tracker, Alarm Clock, Always On Display, Calendaring
Cellular Technology	4G 5G
Clasp Type	Armband
Closure Type	Closure:
Operating System	Xiaomi HyperOS
Shape	Square
Sport Type	Multi-Sports
Style Name	Modern
Target Audience	Unisex Adults
Water Resistance Level	Waterproof
Waterproof Rating	5ATM
Wireless Provider	Unlocked for All Carriers