Isobrite T100 Chronograph Watch Black Small. To ensure uninterrupted service the watch is powered by a reliable Swiss Ronda 715Li movement with a 10-year lithium battery. When your adventure involves water this watch is ready to accompany you diving down to 200 meters. Constructed out of lightweight carbon fiber reinforced polycarbonate and scratch resistant sapphire crystal the watch weighs in at only 3 ounces. Plus the included silicone strap provides the utmost in comfort and adaptability. Specifications for Isobrite T100 Chronograph Watch: Manufacturer: Isobrite Gender: Unisex Dial Color: Black Band/Strap Color: Black Case Color: Black Marker/Numeral Color: White/Red Color: Black/White/Red Case Finish: Black Case Material: Carbon Fiber Reinforced Polycarbonate Case Diameter: 47 mm Bezel Finish: Black unidirectional ratcheting diver bezel with two tritium elapsed minute markers Band/Strap Material: Silicone Movement: Swiss Quartz Illumination Type: Tritium Water Resistant Mark: 200 m Weight: 3 oz Additional Features: Scratch-resistant sapphire with anti-reflective coating Included Accessories: Extra Nylon Strap Age Group: Adults Package Contents: Isobrite T100 Chronograph Watch Isobrite ISO401: T100 Chronograph Watch Black Small