Designed for efficient use under water or on dry land, this tissot sport chronograph timepiece features a swiss quartz movement and is water-resistant to 300 meters. The black dial, with easy-to-read luminous markers and skeletonized hands, blue second hand and accents, is surrounded by a unidirectional rotating bezel. Protected by a scratch-resistant sapphire crystal and screw-down crown, this model also has a helium valve and diver's extension clasp. A handsome stainless steel case and black rubber strap unites the design. Style # t0664171705700.