Top Quality Japanese Quartz MovementCase Diameter:42mmFully Functional Working Chronograph (Stopwatch)Mineral crystal scratch durable glass faceFully Functional Chronograph Pusher at 2:00 starts/stops Chronograph Pusher at 4:00 resets ChronographSolid 316 Stainless Steel CaseSolid 316 Stainless Steel StrapWater-Resistant