Automatic mechanical movement 50m waterproof Visible movement of hollow dial Luminous pointer Model: sb08yt18-645198926975 Strap color: Black / Brown (refer to the main figure) Dial color: Black / gold (refer to the main figure) Dial shape: round Thickness of watch disc: 14mm Diameter of watch disc: 43mm Watch band width: 20mm Steel strip length (including watch disc): 210mm Steel belt buckle style: snap fastener Waterproof performance: 50m (bathing, raining, swimming) Movement type: automatic mechanical movement Strap material: steel belt / leather Case material: stainless steel Buckle material: stainless steel Mirror material: mineral reinforced glass Applicable population: male Display type: pointer Style features: high end, fashion and leisure Functions: calendar, night light, hollow out Weight: 145g Package size: 14*10*8cm Package weight: 250g Package: watch x 1 Note:The fully automatic mechanical watch needs to generate power through the pendulum and wind up automatically. It is recommended to wear it for more than 8 hours every day.