Model: Seiko Watch - Seiko Men's Coutura Kinetic Retrograde Day Indicator Watch SRN023 Case material: Black ionic plated stainless steel case with see-thru screw down case back Case dimensions: 40mm (1 3/5") in diameter not including the crown Movement: Seiko kinetic movement - never need a battery change Crystal type: Highly scratch resistant sapphire crystal Crown: Push and pull cabochon crown Water resistant: 100 meters Face color: Black Band type: Black ionic plated stainless steel band with fold over clasp with push button Band length: Will fit 5 3/4 - 8 1/4" wrist Additional features: Automatic power generator; Power reserve indicator function; 6-month K.E.S.U. (kinetic energy storage unit); Day and date display; Luminous hands and markers Warranty: 3 year manufacturer's warranty on all Seiko watches Items included: Owner's manual, Seiko warranty material