Rip Curl Men's Quartz Stainless Steel and Leather Sport Watch, Color:Black (Model: A2256-MID) Jeweled Movements: Synthetic rubies which serve as bearings for gears in watches. This reduces torque and friction allowing your watch to run more accurately for longer. 316L stainless steel case: The highest grade of stainless steel for water resistance, strength and non-corrosion in a marine environment. Genuine leather band Midnight style with all-black dial, case and band Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving