Note: Some customer complain the fitness tracker counts more "steps" than they actually walked, that's because people wear fitness tracker on wrist and swing arms a lot when not walking, fitness tracker counts "steps" by recording the movement of itself, we suggest to wear on non-dominant hand, and it will be much more accurate if wear on ankle, please order ankle band from link http://www.amazon.com/dp/B016YJ4BYG , or send us a mail after you receive the fitness tracker, we can give you ankle band for free
Screen: 0.91' OLED
Strap Material: TPU
Strap lenght: can be adjusted 5.9 inch ~ 8.8 inch
Standby time: 5 days, charge with micro USB in package
Bluetooth standard: BT4.0BLE
Compatilbe: Android phone with 4.3+ system, and Apple product with IOS 7.0+ (but sometimes iPhone4 not work reliablely, iPhone 4S/5/5C/5S/6/6plus works)
Some customer complain this fitness tracker display military time instead of standard time, it will display standard time if you connected it with your phone and your phone display standard time.
Some customer complain the tracker sometimes record steps, sometimes not. If you set "day time" as 9:00 AM~9:00 PM, the remaining time will be "sleep time", it dose not record steps during "sleep time"
Again, please do contact us whenever you meet any problem, we would love to help and improve based on customer feedback, will reply mail within 12 hours (let us know your order ID, we can support better).