Stainless steel automatic with date, COSC certified, atomatic helium release valve, stainless steel/ceramic bezel, round, 50atm/screw-down crown dial: green index, rubber strap Metal Type: Stainless steel/Ceramic Case Size: 44.6 mm Movement: automatic Function: hour, minutes, seconds, date Water Resistant: 500 m Bracelet: rubber with recycled textile inlay Buckle: stainless steel adjustable diving clasp