The Men's Citizen BN0100-42E model with a Silver Stainless Steel case, water resistant to Diver's 200 m (ISO 6425), with matching Black Pin buckle band. The Citizen watch has a Mineralglass. The Quartz (Solar Powered) movement is inside the 41mm diameter case and 12mm, this is comfortably sized for all wrists without looking massive, and feels comfortable and solid on the wrist. Citizen, a pioneer in watchmaking and innovative technology since 1918, promotes excellence and creativity with a deep-rooted respect for craftsmanship. An Eco-Drive watches recharges itself in any kind of light, to run forever. Watches with Eco-Drive do not require any battery replacement, charging or winding to maintain constant operation.