Wear the Titanium Field Watch built with 200 meter water-resistance, interchangeable straps, and a rugged, military-inspired design ready for the outdoors. Our dynamic everyday Field Watch is powered by a self-winding Japanese-made Miyota 9039 automatic movement, which harnesses energy through the motion of your wrist. Unlike the batteries needed for quartz movement, this legacy timepiece has the potential to run forever with an accuracy of -10 to +30 seconds daily with 42 hours of power reserve.