From the Alpina Seastrong Diver 300 collection, this men's watch features a grey dial with a screw-down crown, a turning bezel, and a date display in a 44.0mm grey titanium case. Automatically generating electrical energy by the motion of your wrist, this watch stores the energy in a self-recharging battery that never needs to be changed. The tan vintage leather strap secures with a buckle clasp. Water resistant up to 300 meters.