Seiko Smgg21

The new model is based on a classic digital watch design from 1982 known as the Rotocall. This iconic creation featured a distinctive octagonal rotary switch that revolutionized the way users changed modes by simply rotating the bezel. The unique design, along with its popularity among astronauts, contributed to this model’s strong international recognition. Caliber Number A824 Movement Type Quartz Precision ±20 seconds per month Battery life Approx. 3 years Functions Rotary switch Chronograph up to 100 hours in 1/100 second increments Alarm function (single-time alarm) Dual-time function Battery life warning function Case Material Stainless steel Case Size Thickness:10.6mm Diameter:37.0mm Lug-to-lug:43.5mm Crystal Hardlex Clasp Three-fold clasp with push button release Bracelet Length 195.0 Distance between lugs 20 Water Resistance 10 bar Weight 107.0g Features Rotating bezel Screw case back