G-Shock Casio men’s black resin strap watch 53.8 mm. Adjustable strap. Like new. Tried on only. Rugged Casio G-Shock with black and silver tones. Features multiple dials and shock resistance. G-Shock's exciting multifunction timepiece has an impressive dial offering loads of great features, plus extreme water resistance and signature shock resistance. These watches are equipped with Bluetooth® that lets them connect with a smartphone at the press of a button and acquire time information from an internal time server. The result is accurate timekeeping no matter where in the world you happen to be. Style #GSTB100-1A Features Movement: three-hand quartz Case: round stainless steel; 53.8mm Strap: black resin with buckle closure; adjustable length: 145-215mm Dial: gray multifunction with day & date plus LED lighting Water resistance: to 200 meters Shock resistant Functions: LAP memory 120, 5 daily alarms, stopwatch, countdown timer, full auto calendar, dual time & hand retract