Specifications GV2 4544B Men's XO Submarine Swiss Automatic Watch GV2 Men's Swiss Automatic from the XO Submarine Collection 44mm 316L stainless Steel Case with Black dial, Black Bezel, Luminous Hands and Hour Markers Screw down crown, Case back 4 screws Unidirectional Rotating Bezel, Dual time zone 316L Stainless Steel Black bracelet With Deployment Buckle Anti-reflective Sapphire Crystal Water Resistant to 100 Meters/10ATM Swiss Automatic Movement, Sellita SW200-1