Mondaine Men's Swiss Railways Evo Watch A6583030014SBB Imported Swiss quartz movement Crystal/Glass material: Hardened Mineral Case size/diameter: 35mm Case material: Stainless Steel brushed Water resistant to 99 feet (30 M): Withstands rain and splashes of water, but not showering or submersion Swiss quartz movement Durable saphire crystal Case diameter:35mm Stainless steel case Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion