Citizen Better Starts Now Promaster Sky Go further A pilots watch for Global players In 1976, Citizen invented the worlds first light-powered anolog quartz watch that runs using only light as a power source. Eco-Drive technology converts light into electrical energy which is stored in a rechargeable lithium ion power cell to keep the watch running forever. The ultimate convenience to the wearer is never having to change your watch battery again. Eco-Drive watches are designed so that any light source, no matter how dim, will generate the energy needed to power the watch. Even in total darkness, Eco-Drive watches keep running for more than six months on a full charge. Features: - 3-Year power reserve(in power save mode) - Accuracy: +/-15 seconds/month - Case: Stainless steel - Band: Stainless steel - Glass: Sapphire glass - Case Size: 45.9mm - W.R: WR200/20bar - Radio controlled watch - Perpetual calendar - 1/1 sec chronograph up to 60 min - Aviation slide rule rotation bezel - Alarm - Daylight saving function - Day and - 12/24 hr time - Push button - Power reserve indication Specifications: - Material: Stainless steel What's in the box 1 x Citizen Gents Promaster Sky Eco-Drive Pilot's