M2H IP67 Smart Band Bracelet Heart Rate Sports Records Call Reminder Fitness Tracker OLED Screen for Android iOS 5V AA batteries Battery: 1x

5V AA batteries Battery: 1x 1800mAh Li-on Battery(include) Charging Time: 3-4 hours Net Weight: 277g / 9

4 x Spare Propeller

Ultra-long Battery Life: it consumes less power and can generally standby for 7 - 10 days

on both sides of the nose

Talk time: Approx

M2H IP67 Smart Band Bracelet Heart Rate Sports Records Call Reminder Fitness Tracker OLED Screen for Android iOS 5V AA batteries Battery: 1xProduct Features: Chip maker: Nordic Chip: Nordic 52832 APP: Wearfit 2. 0 Compatible system: Android4. 4 (contain), IOS8. 0 contain) above FLASH memory: 256kb+56kb Type: OLED Screen size: 0. 96 inch Pixels: 96*128 Function: Step counter, sleep, real time heart rate, smart alarm clock, shake, take pictures, personal information, intelligent anti lost, her bright screen, sedentary reminder, bright screen time, find the bracelet, Call reminders, SMS