Citizen’s simple yet revolutionary Eco-Drive technology harnesses the power of light, whether natural or artificial, and converts it into energy, storing the surplus in a power cell. Designed to charge from any form of light source, from sunlight to desk lamps, you can go about your daily life and be confident that your Eco-Drive won’t stop. This Citizen Chandler mens watch is modern and effortlessly stylish. Featuring a stainless steel 40mm round case, a tan brown leather strap a navy blue dial. Ref: BJ6500.12L Product InformationBrand: Citizen Eco-Drive Caliber number E031Case Material: Stainless SteelCase Size: 40mmType of Strap: Brown Leather Glass Material: Sapphire CrystalDial: BlueWater Resistant: 30mGender: Mens