First serials:

1, Heart rate monitoring by infrared ray
2, Constant 5seconds reading of even value of heart rates
3, Calorie functionality
4, Alarm clock/o'clock telling
5, Stop watch
6, 12/24hours
7, 3ATM water resistant
8, Japan Li-battery 2-3year life
Material of watch: ABS case with alloy bezel
PU bracelet

Second serials:

1, Standard time display: hour minute, second, month, day and week, auto-calendar(2000-2099), 12/24hours and function of daylight saving time.
2, 3 different sets of alarm clock/o'clock telling
3, Function of watch: Maximum timing 99:59:99, SPL function.
4, Count down timing: Maximum timing 23:59:00
5, Dual time zone
6, Tangent mode of heart rate monitoring, active and alive pulse monitoring and display
7, 3ATM water resistant
8, 3seconds time-elapse of EL background lighting
Material of watch: ABS case
PU bracelet

Sinnan Timepiece provide you with oem/odm service on nearly all kinds of wrist watches, welcome your rfq message and inform us your detailed information about your watch project. And we arrange production upon the placing of order. We would be contacted online by our Skype sinnantimepiece.