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 modern classic design timepiece features a nylon strap and 43mm case and black colour dial. 100m water resistant. Ref: BM7550-10E Product Information Brand: Citizen Technology: Eco Drive Case Material: Stainless Steel Case Size: 43mm Type of Strap: Nylon Strap Glass Material: Mineral Crystal Dial: Black Water Resistant: 100m Gender: Mens