【Function & Feature】 Water-resistant 3 ATM: withstands rain and splashes of water, but not showering, diving, snorkeling or water-related work. Luminous Hands: Luminous parts will glow in dark after absorbing light. Chronograph Indicator: three timekeeping indicator: 1/10 microsecond, second, minute Calendar: show the date. At the end of a month, you may need to set the date to the right one. Function Demonstration ① 1/10 microsecond Indicator ② Minute Indicator ③ Second Indicator ④ Date Indicator A: Star/Pause Button - at the two o’clock position (Push the start button to begin recording time, push it again to stop the recording. B: Reset Button – at the four o’clock position (Push the reset button, three train wheels would be reset. Pay attention: You MUST STOP the three train wheels before resetting.) C: Crown (Pull the crown out to the first section to set calendar, pull it out to the second section to set time)