Citizen Men's Eco-Drive Signature Perpetual Calendar Chronograph Watch, BL5460-00E Eco-drive is fueled by light, any light, so it never needs a battery. 1/20 second chronograph measures up to 60 minutes Perpetual calendar Dual-coated anti-reflective sapphire glass crystal. Dual time Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!