ECOOPRO Men's AK1170B Black Rubber Strap Black-Tone Analog Digital Sport Watch Waterproof Quality Japanese-Quartz movement +Digital Movement ,Japanese Maxall battery. Japan original quartz with clear ,accurate time calibration. High strength glass (PMMA) with anti-scrape ,soft PU band. EL backlight, alarm, stop watch, snooze time,chronograph ,12/24 hour time , showing day-month-date. Water-resistant up to 50 meters.