Citizen Men's BJ8050-59E Eco-Drive Professional Diver Stainless Steel Bracelet Watch Light powered Eco-Drive Caliber B873 Japanese-quartz movement; charges in natural sunlight or indoor light Max power reserve: 180 days; low charge warning: 3 day; Quick start ability; charge time from stop state to max charge Durable, curved extra-thick (6mm) non-reflective mineral crystal; case diameter: 48 mm; for mixed-gas diving; unidirectional rotating time-elapsed bezel Stainless steel case and matching bracelet; black dial; date function at three o'clock; large luminous hands and hour markers for easy readability both in and out of water; screw-back case and screw-down crown Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours