W311-Optical sensor(Green ray)Heart rate wristband
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  • Specification
1.Bluetooth 4.0 Low Energy Transmission
2.Bluetooth Optical Heart Rate Monitor
3.Sleep Monitor
4.Step, Distance, Speed and Calorie Counter
5.iOS & Android Support Wrist Pedometer
6.Vibration Alarm
7.OLED Display 
8.Rechargeable Lithium-ion Battery 
9.Upgraded Hook Design
10.2 Fixation Methods for Firm & Secure Usage
Model NO.W311
Weight:28 Gram
Transmission:Bluetooth 4.0
Compatible OS:iOS 7.0 or Above and Android 4.3 or Above
Materials:ABS + PU
Battery:Lithium Rechargeable Battery
Battery Life:Normally 2 Days (Heart Rate On)
Bluetooth Chipset:Nordic

Product Details