Heart-Rate-Monitor-Toprime-1219BK-Watches-Pedometer-Fitness-Tracker-3D-Heart-Rate-Sensor-Black

Product Feature:
* Accurate wireless heart rate (HR) Measurement, Max. HR value, average HR value display
* Display the percentage of real HR value to Max. HR value based on different age
* Record the exercise time and exercise calorie consumption
* Set maximum HR and low HR alarm
* Step counting, Speed, Calorie, Distance, Exercise time
* Clock, Calendar, 12H/24H
* Alarm
* Timer & Stopwatch
* El backlght
* 5.3 Khz transmitter belt
* 6 Day memory record

Notice:
You must set your personal information first, otherwise it will be inaccurate.
If you still can't opperate it please read user manual or contact "seller".
Is it water resistant?
Yes.
But it is life-waterproof, 30m, you can ware it wash your hands, in the rain, lightly swimming but not surfing and under water.
What in the package?
1 x smart watch
1 x user manual
What is the use environment and battery?
Operation Temperature:0 -- +50 degree centigrade
Storage Temperature:-5 -- +60 degree centigrade
Humidity:10%--95%
Battery: CR 2032 Lithium battery