Features Overview: 1 Time calendar function: * Time range: January 1 2000 - December 31 2099; * 12/24 hour format selection; Auto Show * week. 2.2 Group alarm function: * Alarm Time: 1 minute; * Hourly Chime 3 stopwatch function: * The maximum value is: 59 '59 "99; * SPL function. 4 countdown function: * Maximum was: 23: 59.00 5 meter step function: * 7 seconds smart pedometer; * Three kinds of pedometer mode display: pedometer / time display mode → pedometer / exercise time display mode → calories / mileage display mode; * User Info Settings: Metric / Imperial → weight → Step → G-Sensor sensitivity. 6.50 days keep step automatic memory function 7 heartbeat measurement functions: * Heartbeat measuring range: 30 to 200; * Through contact measurement display dynamic pulse of the times. 8 can bind options: * Whether the charging animation instruction; * Have heartbeat measurement mode. The backlight: EL or LED 10.IC Operating voltage: 3V Note: Maintenance Tips: one whether it is not with a waterproof watch please do not put into the water and exposure to water and mist; two to avoid collision with hard objects chemical exposure to avoid the magnetic field; Third the table back protective film must remove the chip to use.