Automatic mechanical diving watch $ 235.78 Model: HMSGO1B Power mode: fully automatic machinery Movement: Seiko SII-NH35A imported from Japan Time accuracy: average daily difference + 10 seconds/day Table mirror material: sapphire table mirror Table mirror coating: AR coating/anti-reflective coating/anti-fouling coating Case material: 316L stainless steel (PVD vacuum plating) Case rotation: anti-reverse rotation Crown material: 316L stainless steel (PVD vacuum plating) Crown structure: screw-in lock waterproof type Strap material: stainless steel Clasp style: single folding buckle Luminous material: Swiss super night powder Waterproof depth: 200m saturated diving waterproof Whole table size: about 47mmX47mm Overall thickness: 14.5mm