Swiss made automatic movement Sellita SW200-1, mechanic, self-winding Powerreserve apx. 38 Hours Frequency: 28,800 A/H (4 Hz) Jewels: 26 Date Case diameter: 44 mm Case height: 16 mm 316L Steel case High Gloss finish Screw-in crown Screw-in caseback Sapphire crystal Monodirectional ...Swiss made automatic movement Sellita SW200-1, mechanic, self-winding Powerreserve apx. 38 Hours Frequency: 28,800 A/H (4 Hz) Jewels: 26 Date Case diameter: 44 mm Case height: 16 mm 316L Steel case High Gloss finish Screw-in crown Screw-in caseback Sapphire crystal Monodirectional bezel with sapphire insert Water Resistant: 100 ATM / 1000 m Superluminova applied on hands and markers Stainless steel mesh bracelet