Pulsmesser Fitness Flex Smart Armband

V05S Smart Bracelet BT4.0 Heart Rate Monitor Smartband Heart rate monitoring, pedometer, calories burned, distance, sleep monitoring call reminders, alarm reminder, anti-lost, photographs and other remote control Waterproof and dustproof: living water (sweat-proof, rain and water spray) Lift wrist display, touch keys Vibrate real-time (non-Bluetooth connection status) Compatible OS Android 4.4 / iOS 8.0 and above system   Description: Available colors: Black, Blue, Orange, Purple Special Feature: Light on Wrist Up Data Storage: Latest 7 Days Sensor: Gsensor kXTJ2- 1009; Display chip: Nordic nRF51822; Heart rate sensor: Silicon labs Si1142; Screen type: OLED touch screen Data storage: 7 days Detailed record motion data; Battery:70mAh polymer lithium battery; Life time: 5-10 days; Charging method: 2-point contact charging; Charging time: about 1-1.5 hours