Casio Unisex W-215H-7AVCF Classic White Digital Stop Watch Square sport watch featuring 1/100th second chronograph stopwatch LED light, alarm, and day/date functions 40 mm resin case with mineral dial window Japanese quartz movement with digital display Textured resin band with buckle closure Water resistant to 50 m (165 ft): In general, suitable for short periods of recreational swimming, but not diving or snorkeling