Product information : Waterproof: yes Waterproof performance: 30M Movement Type : Mechanical Movement model: Dandong high-quality movement Thickness : 14mm Dial Diameter : 40mm Crown Type : Screw Crown Case back type: transparent bottom Mirror material: Mineral tempered glass mirror Buckle Style: Butterfly Double Snap Buckle Material: Stainless Steel Color: Between gold and black, all gold, between gold and blue, between gold and gold, all black