Casio AWGM100B-1A Men’s G-Shock black resin tough solar power atomic watch carries a case diameter of 46mm and a case thickness of 15mm. Featured on this model is a black stainless steel accented fixed bezel, smooth function pushers. The caseback on the Casio AWGM100B-1A is with four screws, maintaining the 200 meters water resistance. The strap is crafted in black resin and is secured using a buckle clasp. This dive watch has an analog and digital black dial with indexes hour markers. Casio AWGM100B-1A equipped with day-date, month and year display functions. This Casio AWGM100B-1A watch also features multi-band atomic timekeeping (US, UK, Germany, Japan, China) – receives time calibration radio signals which keep the displayed time accurate – Auto receive function (up to 6 times per day/up to 5 times per day for China) – manual receive function – Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60, China BPC – Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz, BPC 68.5kHz, tough solar power, shock resistant, full auto LED light with afterglow, neo-brite luminous hands and markers, world time:- 31 times zones (48 cities + UTC), city code display, daylight saving on/off. 5 daily alarms, hourly time signal. 1/100 second stopwatch, countdown timer, full auto calendar (pre-programmed until the year 2099), 12/24 hour formats, button operation tone on/off (tentative), accuracy: +/-15 seconds per month (with no signal calibration), storage battery: solar rechargeable battery, battery power indicator, power saving function, approximately battery life: 6 months on full charge (without further exposure to light). Protecting the dial is a mineral crystal designed to resist scratches. Powering this beautiful watch is a Japanese made quartz movement.