For a rugged look with a comfortable fit this Military-inspiRed timepiece fits the bill. with a day-Date indicator luminous hands 37mm screw-back case and 100M WR. The Black Dial Provides a backdrop for simple Arabic numerals housed in a stainless Steel case along with a woven Green Strap with patterned stitching and a buckle clasp. Featuring our Eco-Drive technology – poweRed by light any light. Never needs a battery. Caliber number E100.