Meet the Oris Great Barrier Reef Limited Edition IV, a 2,000-piece limited-edition based on the Aquis Date and inspired by the pioneering work of Reef Restoration Foundation. Behind its beautiful gradient blue dial is our Calibre 400 five-day automatic movement. Oris is launching the fourth watch of the Great Barrier Reef Limited Edition series as a part of our long-standing commitment to the Australian Great Barrier Reef, the world’s largest reef system. Reef Restoration Foundation is an Australian non-profit working to combat the devastating effects of coral bleaching on the world’s coral reefs. Healthy reefs are vital to our planet’s health and it’s a privilege to support the foundation’s work. <br /><br /><strong>Case:</strong><li>Material: Multi-piece stainless steel case, Tungsten minutes scale top ring </li><li>Size: 43.50 mm</li><li>Top Glass: Sapphire, domed on both sides, anti-reflective coating inside</li><li>Case Back: Stainless steel, screwed, special engravings</li><li>Operating Devices: Stainless steel screw-in security crown</li><li>Water Resistance: 30 bar </li><li>Interhorn width: 23 mm</li><br /><strong>Movement:</strong><li>Type: Automatic winding big date developed by Oris</li><li>Number: Oris 400</li><li>Dimensions: 30.00 mm</li><li>Functions: Centre hands for hours, minutes and seconds, date window, instantaneous date, date corrector, fine timing device and stop-second</li><li>Extra Features: Highly anti-magnetic</li><li>Winding: Automatic</li><li>Power reserve: 120 Hours</li><li>Vibrations: 28’800 A/h, 4 Hz</li><li>Jewels: 21</li><br /><strong>Dial:</strong><li>Design: Blue Gradient</li><li>Luminous Material: Indices, hands and lollipop seconds in Super-LumiNova</li><br /><strong>Strap</strong><li>Material: Multi-piece stainless steel metal bracelet with Quick Strap Change System, security folding clasp with Oris-patented quick adjust clasp system</li><br />Oris Style #: 01 400 7790 4185-SET