The Longines L2.816.1.93.2 Avigation BigEye watch from the Heritage collection combines a 41mm round shaped titanium case and brown leather strap with a buckle clasp. It has a blue petroleum coloured analogue dial with Swiss Super-LumiNova coated hands and black chronograph sub-dials, all of which is protected beneath scratch resistant sapphire crystal glass with several layers of anti-reflective coating on the underside. Power is generated by the L688 automatic movement with a power reserve of approximately 66 hours. This model also has a water resistance of up to 30 metres and a 5 year warranty.