D21 Smart Bracelet Wristband Bluetooth IP68 Waterproof, All functions, for iOS/Android

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1. The user data (gender, age, step length, height and weight settings)
2. Time settings (including year, month, day, hour, minute, second, .24 hour)
3. Data analysis (data day movement sleep; ranging; energy consumption;)
4. vibrate (call reminder alarm reminder)
5. SMS alert (text message when a new channel to vibrate)
6. Heart Rate oxygen (oxygen resolve HR)
7. Take photo (when the phone rings to receive notifications sent hand, app to find reminders according to the content of the notice)


Bluetooth 4.0 for data transfer, the device automatically connects match.
Display: the battery state of charge, low battery indication, Bluetooth connection status.
Reminder: calls to remind, alarm reminders, SMS alerts.
Detection: pedometer, exercise distance, exercise time, calories, sleep, heart rate, blood oxygen
User Description: sex, age, step length, height, weight.
Others: Find the phone.
Air upgrade: Hardware "OTA" upgrade, upgrade remote operation by APP.
IOS6.0 above, Android4.4 or more devices.
Charging mode: USB charger
Charging voltage: DC5V
Power type: polymer lithium battery
Bluetooth standard: Bluetooth 4.0 BLE
Standby current: less than 150uA
Waterproof level: IP67,cann't support swimming diving and bathing

Package Contains:

1 * BT4.0 Smart band bracelet
1 * Charger
1 * User manual

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