Product information: Color: FW-6820-S1 silver shell white surface silver steel belt, FW-6820-S2 silver shell black surface silver steel belt, FW-6820-S3 rose shell black surface rose steel belt Waterproof performance: 30m Movement type: Machinery Mirror material: mineral reinforced glass mirror Buckle style: butterfly double snap-fastener Watch-buttom material: Stainless steel Strap material: Stainless steel Dial shape: Square Watchcase material: Stainless steel