The rugged design of this military-inspired watch is guaranteed to get you noticed. Key features include day-date, luminous hour and minute hands and 100 meter water resistance. Additional details include bold numerals on a khaki dial, stainless steel black ion plating with a black strap, and 42mm screw-back case. Featuring our Eco-Drive technology â€“ powered by light, any light. Never needs a battery. Caliber number E101.