Casio Men's 'Waveceptor' Quartz Stainless Steel Sport Watch, Color:Silver-Toned (Model: WV300DA-7AC) Quartz movement Auto receive function (4 times per day); signal: WWVB, Frequency: 60kHz Auto EL backlight with Afterglow; world Time 29 times zones (48 cities), city code display, daylight saving auto on/off Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving