Seiko Chronograph Water resistant 100M model no. 4T57 00A0 stainless steel 3 dial chronograph 1/10 sec. 1 sec, 1 min stopwatch Luminous hour, minute & second hand & hour markers Japanese Seiko quartz movement 4T57 calibre, new battery Seiko stainless steel case, c. 42.5mm. without crown Date window 3 o'c Screw down case back Original steel Seiko deployment strap fit c.18/19cm Original chrono buttons & crown Water resistant 100m/10bar/10atm/330ft