Brand: SUGESS Movement: Seagull ST1901 Manual Material: 316L Stainless Steel Mirror: Sapphire Crystal Watch Diameter: 40mm Watch Thickness: 13mm Weight: 69g Waterproof: 50m Strap: Leathe Clasp: Pin Buckle Strap Lug: 20mm Lug to Lug: 51mm Function: Luminous, Small Second, Chronograph