Luxurious treatments and uncomplicated design is the heritage of the M77 model from Lum-Tec. Equipped with a Swiss automatic movement, sapphire exhibition caseback, 300M water resistance, screw lock crown with double diamond sealing system, and double domed low profile sapphire crystal with anti-reflective coating. Includes extra rubber strap. One of 85 models made. Brushed Solid Grade 5 Titanium case and crown Double domed low profile sapphire crystal with double side anti-reflective coating Screw lock crown with double diamond sealing system Threaded stainless steel caseback with sapphire window High-tech Viton® gaskets 300 meters/990 ft. water resistance Special textured dial with MDV® luminous technology Precision tuned Swiss ETA 2824-2 automatic movement with hacking feature 2 straps included: Dark burgundy leather strap. 24/22 size Custom molded anti-static rubber strap. 24/22 size Extra springbars included for fitting other straps Case size: 44mm (approximately 1 3/4")