Main function:

-Heart Rate Monitor
-Time Display
-Waterpoof (IP65)
-15-25 days standby power
-Sleep-cycle smart alarm
-Fitness monitor & sleep tracker
-Passometer & Call notifiction (for android only) (bluetooth 4.0 version
-Push message (for android only). it just show application icon , can't display character
Appearance parameters :
Product Size: 225mm*16mm*10mm
Head size : 36mm*11mm*12mm
Package Size: 96mm*96*30mm
Colors :Black,Blue,yellow
Product weight: 13.7g
Package weight: 69g
Band material:TPU
Band material:Aluminum alloy
Control mode:Touch screen
Screen:0.69''OLED
Working time:5 days
Working temperature :-20°C-50°C
Hardware :
Synchronous :BT4.0LE
IP rate :IP65(not support for swiming and taking bath)
Battery type :Lithium polymer
Battery capacity :45mAh
Operating system: Bluetooth4.0, IOS7 version above or Android 4.4 version above
DO formula for maximum heart rate calculate: 220 - age
below 50% of the maximum heart rate, it will not defined as sports exercise
up to 50% - 69% of the maximum heart rate, defined as low-moderate sports fat burning zone, fit for exercise beginner
up to 70% - 84% of the maximum heart rate, last long time under aerobic exercise, it improves heart and lung function, also enhance blood vessel