Prospex watches challenge every limit for sports lovers and adventure seekers. Powered by light - no battery change required. 10 Month power reserve once fully charged. Black silicone strap with traditional tang closure. Black sunray dial with LumiBrite hour markers and three hands. Black uni-directional rotating bezel. Day of the month window at the 3 position. Rose gold-tone lugs. Screwdown crown and caseback. Sapphire crystal dial window. Case size: 38.5mm. Water resistant to 200 M. Follows ISO standards and is suitable for scuba diving.