This proprietary technology eliminates the need for battery replacements by using light as a constant power source.
: Excess energy is stored in a rechargeable lithium-ion power cell, allowing the watch to run for at least six months in total darkness on a full charge. ECO DRIVE TITANIUM
: Since its invention in 1976, Eco-Drive has saved over 100 million batteries from entering landfills. 2. Super Titanium™ Construction This proprietary technology eliminates the need for battery
Citizen uses a proprietary material called , which improves upon standard titanium. Citizen Eco-Drive Titanium Watch Review - The Duane Storey ECO DRIVE TITANIUM