The PSR Digital Quartz watch celebrates the launch of Hamilton's revolutionary first digital watch. The hybrid display and a stainless steel case bring this game-changing invention back to the future. Movement: Quartz. Case Size: 40.8mm x 34.7mm. Case Material: Stainless Steel. Crystal: Sapphire. Water Resistance: 100m. Buckle Type: Folding Clasp. Buckle Width: 19mm. 2-year manufacturer warranty. Presented in official Hamilton packaging.