Men's Tourbillon Luminous Waterproof Hollow Out Mechanical Watch $ 30.83 Product information: Color: 816 gold shell white surface steel strip, 816 silver case white surface steel strip, 816 silver case black surface steel strip, 816 black shell black surface steel strip, 816 gold shell white surface belt Thickness: 16MM Dial diameter: 43mm Waterproof performance: 30m Movement type: Machinery Crown type: Spiral crown Case back type: transparent bottom Mirror material: high hardness coating watch cover Buckle style: butterfly double snap-fastener Watch-buttom material: Stainless steel Strap material: Stainless steel Packing list: 1*Watch Product Image: