The Casio G-Shock GSTS300G G-Steel Men's Watch features a 49.3mm stainless steel/resin case with a hefty urethane band for maximum durability and wearing comfort. Smaller and thinner than previous model G-Steel series watches, the GSTS300G-1A9 carries a layered guard structure, Casio's Tough Solar technology, and double LED lights. The GSTS300G-1A9 G-Steel Watch from Casio is the ideal timepiece for the active gentlemen who wants the stylish and functional look and feel of a metal watch. Tough Solar With the G-Shock GSTS300G-1A9, you never have to worry about the battery running down thanks to Tough Solar technology. The watch's solar panel converts even weak illumination from fluorescent lighting into electric power, essentially recharging its battery. Double LED Lights Equipped with double LED lights, the Casio G-Shock GSTS300G-1A9 G-Steel Watch ensures that you'll never be left in the dark. Two white LED lights cast brilliant illumination on the hands and LCD so the display remains visible in low light and complete darkness. Shock and Water Resistant Heavily tested to military standards, the Casio G-Shock GSTS300G-1A9 is shock resistant against impact and water resistant to 200 meters (660 feet). During high impact land and water sports such as motocross, mountain biking, skateboarding, jet skiing, surfing, scuba diving, this rugged watch can take a beating.