Model: Seiko Watch - Seiko Men's Sportura Alarm Chronograph SNA451 Case material: Solid stainless steel case with screw down case back Case dimensions: 40mm (1 3/5") in diameter not including the crown; 10mm (3/5") in thickness Weight: 6.1 oz Movement: Seiko quartz movement Crystal type: Highly scratch resistant sapphire crystal Crown: Screw down crown Water resistant: 100 meters Face color: Black Band type: Solid stainless steel band with fold over clasp with push button Band length: Will fit 5 1/2 - 8 1/4" wrist Additional features: Alarm can be set on a 12-hour basis with two small hands; Chronograph function: measures to 1/5 seconds up to 60 minutes; Luminous hands and markers; Titanium carbon nitride plated bezel Warranty: 3 year manufacturer's warranty on all Seiko watches Items included: Owner's manual, Seiko warranty material