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. Modern appeal and sleek design make this men's Corso Sapphire timepiece the finishing touch to any watch collection. Featured with rose gold two-tone stainless steel case and bracelet, black dial with rose gold accents, sapphire crystal and date. Ref: BM7256-50E Product Information Brand: Citizen Eco-Drive Case Material: Rose Gold Plated and Stainless Steel Case Size: 41mm Type of Strap: Rose Gold Plated and Stainless Steel Bracelet Strap Glass Material: Sapphire Crystal Dial: Black Water Resistant: 100m Gender: Mens