Citizen Eco-Drive is fueled by light, it never needs a battery Eco-Drive it's unstoppable Eco-drive technology harnesses the power of light from any light source Both natural and artificial light are absorbed through the crystal and the dial, than a special solar cell converts light and stores it as energy the cell recharges continuously in any kind of light It runs for at least six months even in the dark
Fully charging the watch with an overhead office light is usually insufficient, to achieve a full charge from a completely depleted power reserve, however, office light is sufficient for keeping the watch continually charged It is recommended to use natural outdoor light, or recharge indoors with an incandescent (3,000 Lux) bulb 20" away from the watch in 53 hours, outdoors, cloudy (10,000 Lux) 17 hours and outdoors, sunny (100,000 Lux) in 6 hours
This all Stainless Steel with Black-Ion Plating Eco-Drive Professional Diver Timekeeper is water resistant to 999' (300 meters), is accurate within +/- 15 seconds per month, has a screw-in back case and screw-down crown along with a rubber wrist strap, and it never needs a battery! The solar power generation function transforms solar energy into electrical energy to run the watch Since solar energy is used as the power source of this watch, it has no need of regular replacement of the battery unlike the general diver's watches using the mercury cell, etc Watch has a three day low battery warning
Watch has a non-reflective crystal for ease of reading in all light conditions, gives GMT/Dual Time, and has a one-way rotating elapsed-time bezel Watch case is 1 85" (47 mm) wide, and the watch is equipped with a date window All this making the Promaster-Eco Drive GMT Professional Diver one sought after timepiece Watch purchase includes the five year US warranty
This product has a limited warranty of 60 months.