digital sports watch 2,1/100th of a second 3,12-hour ... 15kgFunction InstructionChronograph-Tow Rows display- Display of lap, split and total elapsed time- 1/100 second, measure up to 9 hours ... 320 beeps/minute- Display of pacer frequency, beep counter and total time elapsed simultaneously, beat counter up to 9999 Clock- ... smoothly.4. Customer OEM & ODM service solution. Hot Sale digital sports watch