Built-in 3D acceleration sensor, high sensitivity, can catch your every tiny action, step meter more accurate. Calories/pedometer/mileage monitoring. Character signature: have individuality signature function, can be input through the computer you want to LED screen to show content, reveal personality fashionistas. Large capacity record function: can be used as U disk and portable hard disk. Have movement data memory function, can record view to individual movement data of more than 10 years. Show time: the time/date display, set the adjustment time can be synchronous with computer. Built-in capacitive touch key, more fashion sense of science and technology. USB charging watches, the built-in rechargeable battery, connected to the USB port to store data and charging. lightweight and mini size, comfortable to wear. Time error 24 h (software can be adjustable range + 99 SEC/day). Data memory, memory storage is more than 10 years of movement. They count steps show 0 ~ 65535. Battery life: rechargeable battery, charge and discharge times > 300 times. Power voltage is DC 5V. Working atmospheric pressure 860 hPa and 1060 hPa. Working temperature 0 to 45 degrees Celsius