Introduction This is a multi-functional watch combines GPS receiver. Apart from time, calendar, and alarm, the watch can reset time by GPS and measure the distance, pace, speed and calories burned, etc. during your exercise. The watch can save and display 10 exercise records, and has long battery life. Charging the Battery Clip the watch with the clamps of the USB cable, and the lovation strip in the clamp must be plugged into the concave at the back of the watch to ensure their electrodes are contacted. Connect another side of the USB cable to a power source. The battery is being charged when the charging icon is flashing.The charging icon stops flashing when the battery is charged fully. It takes 2-3 hours to make full charging if the battery has run down. Feature GPS TimingThe watch will reset time by GPS according to the city you have set when the GPS is activated.Alarm If the alarm is turned on, the watch will chime for about 20 seconds while reaching the alarm time. You can stop the chime using any button.StopwatchThe maximum of stopwatch measurement is 99 hours 59 minutes and 59 seconds. It has two ways to measure: count up timer and lap timer.GPS FunctionThe watch has a GPS receiver. It can measure the distance, speed, etc. when you do exercise.Exercise LapIf you set "AUTO LAP" to 0.5km, 1.0km, 2.0km or 5.0km, after the GPS is activated, when your exercise distance is equal to the distance you have set up, the watch will make a lap automatically. After making a lap, the watch will save and display the lap data: lap No., lap exercise duration, lap pace, lap distance, lap average speed. This watch can make at most 50 laps data each exercise.Exercise RecordThe watch can save the last 10 exercise records.BacklightThe screen will remain illuminated for about 5 seconds if you pre blacklight button.Water ResistanceThe watch is water resistant to 5 ATM. It is no problem to wear the watch while washing hands, having shower with cold water, swimming. Do not wear the watch while p> Notes For Customer This watch factory-set is in the sleeping status, please pre four buttons together to return to the time mode and display the current time on the screen. In the sleeping status, this watch keeps time only without displaying on the screen. Packaging USB Cable Charger, Warranty Card, Instruction Manual.