Dive in confidence with this 300M Automatic from Lum-Tec. Featuring Lum-Tec's MDV technology and quality construction, this watch is the ideal companion for your next diving adventure. Case width 40mm excluding crown (approximately 1 5/8 inches) Lug width 22mm (7/8 inches) 316L Stainless steel Uni-directional 60-click rotating luminous bezel with sapphire insert Alternating brushed and high polished finish 21,600 BPH Sii NH35 Japan automatic movement with hacking and hand-winding features Sapphire crystal with clear double side anti-reflective coating Threaded solid stainless steel case back LUM-TEC MDV technology (2-tone) Screw lock crown with double diamond sealing system Water resistant to 300 Meters / 990 ft 2 straps included: Stainless steel bracelet with diver's extension and molded rubber One year limited warranty Free lifetime timing adjustments Limited numbered series