LIGHT-POWERED ECO-DRIVE: Converts any light, whether natural or artificial, into energy. Energy is stored in a permanently rechargeable power cell. The watch recharges continuously in any light to run forever, with no battery changes required ever. WATER RESISTANT TO 100 M: This tactical watch is water resistant to 10 ATM (100 meters). In general, it’s suitable to wear in the shower, in professional marine activities like swimming and snorkeling, and in surface water sports, but not for scuba diving. Functions E101, 3 Hand, Day / Date FOR YOUR ACTIVE LIFESTYLE: This Citizen silver-toned military watch has a stainless steel case, canvas strap, adjustable buckle closure, three-hand analog display with quartz movement, luminous hands and markers, a day-date display window, and a dial featuring hour markers and a minute track. GUARANTEE & 5-YEAR WARRANTY: At Citizen, we stand by quality and craftsmanship. Every Citizen purchase comes with a 30-day money-back guarantee and a 5-year limited warranty so you can be sure your new Citizen timepiece meets your expectations.