The Longines Mens Spirit Watch L3.810.1.53.6 combines a 40mm round shaped titanium case and a titanium bracelet with a triple safety folding clasp and push-piece opening mechanism. The bracelet is easily changed thanks to the Longines interchangeable system. It has an anthracite dial with gilt hands and Super-LumiNova accents, which is protected beneath sapphire crystal glass. Power is generated by the automatic movement with a monocrystalline silicon balance-spring power reserve of approximately 72 hours. This model is also chronometer certified and has a water resistance of up to 100 metres.