Swiss Made 22-Jewel Precision ETA 251.272 Quartz Chronograph Movement Features 1/10th Second, 60 Seconds, and 30 Minutes Case in Black PVD Solid 316L Stainless Steel Military Nylon Band Srew-Lock Crown and Screw-In Back Crown Shoulder Guard Unidirectional Ratcheted Bezel with 12 Hour Dual Time Zone and 360 Degree Compass Heading Marker Super-LumiNova Advanced Illumination System on Hands and Numbers Sapphire Scratch-Resistant Crystal Calendar Date Window Water Resistant to 100m (330ft) Has 38mm Diameter, 12mm Thickness, and Weighs 4.7oz Every watch comes with a Serial Number and 2 Year International Warranty