Model: Lucien Piccard Watches - Lucien Piccard Men's Watch 27056BK Case material: Polished surgical grade solid stainless steel case with screw down case back Case dimensions: 38mm in diameter, 41mm with crown; 9.5mm thick Weight: 4.3 oz Movement: Swiss quartz chronograph Crystal type: Scratch resistant sapphire crystal Crown Push and pull sapphire cabachon crown Water resistant: 30 meter (100 feet) Dial color: Black Band type: Polished surgical grade solid stainless steel bracelet with double deployment clasp Band length: Will fit 6 1/2 - 8 inch wrist Additional features: Chronograph function: measure up to 30 minutes; Date display Warranty: Manufacturer's lifetime limited warranty on all Lucien Piccard watches