Surwin HR Fitness Band with Heart Rate Monitor, Music Control and Bluetooth 4.0 for iPhone (iOS 7.1 and Higher) or Android (4.4 and Higher) Smartphones (Black)

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Functions: 24 hour Dynamic Heart Rate monitor, Call alert caller name/caller ID, Wrist sense, Time & date, Step pedometer, Calories counter, Distance track, Automatic sleep recognition, Sleep monitoring, Sms alert, Alarm alert, Anti-lost, Find phone, Sedentary Alert, Remote music player, Sns alert include facebook, Twitter, Whatspp, Linkedin, Instagram alerts, Etc.

CPU: Nordic nRF51822
Sensor: kionix kx022-1020
Heart Rate Sensor: Silicon labs Si1142
Host Weight: 25g
Battery Type: Polymer Rechargeable Li Battery
Battery Capacity: 60mAh
Data Sync: Bluetooth 4.0
Working Temperature: -10C–50C
Waterproof: IP67
Standby: 5-10 days
Bluetooth 4.0 device application: IOS 7.1 & above;Android: Android 4.4 & above
This product is applied with professional Bluetooth RF signal and self developed algorithm, the accuracy of step pedometer could be up to 95%.

Package Included:
1 x Smart Bracelet
1 x User ManualActivity Tracker with multifunctions – heart rate monitoring, pedometer, calories record, sleep quality monitoring, Music control, sync date and time, notifications, remote camera control, find Phone, sedentary alert, etc.
A truly 24/7 lifestyle Fitness Tracker with wrist-based heart rate monitor
No Charging Cable Needed, Fitness Tracker can be removed off the strap and recharged from any 5V/1.0A USB power supply. 
Compatible with Smartphone: Bluetooth 4.0, IOS 7.1 and above; Android 4.4 and above.
IP67 Waterproof with long battery life.