Win 23Pcs/lot M4 Smartband Bracelet Watch Heart Rate Monitor Fitness Tracker Activity Blood Pressure Wristband Android Ios Sport on AliExpress dispense

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current price: US $99.55

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Item:M4 Smartband

Package included:23Pcs M4 Smartband


Mobile phone system requirements: ios 9.0 or more  ,android 5.0 or more , surpport bluetooth 4.0

Charge the bracelet

For the first time, make sure that the battery is in normal power. If the power is not turned on normally, please connect the charger to charge the device, and the bracelet will automatically turn on.

Adjustment time

For the first time, you need to connect to the APP for calibration. After the connection is successful, the bracelet will automatically synchronize the time.


1.Bathing and swimming should not be worn.

2.Please Connect the bracelet when synchronizing data.

3.Use the included charging cable to charge.

4.Do not expose the bracelet to high moisture, high temperature, or very low temperatures for long periods of time

5.The bracelet appears to crash and restart. Please Check the phone memory information clear and try again, or exit the APP and reopen it.


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