The incredibly thin Stiletto series is the flagship of the Citizen Eco-Drive line - Sleek, thin and refined and no batteries to change ever. Solid Stainless Steel Case and Bracelet with Gold-Tone Accents Deployment Clasp with Push Button is Easy to Put On and Take Off Sapphire Crystal is Virtually Scratch-Proof Water Resistant to 30 Meters Low-Charge Indicator and Time-Reset Advisory - the second hand will move in 2 second jumps to indicate that it needs a charge Never Needs a Battery - Charges in sunlight or indoors as you wear it. When Fully Charged, it will run for 240 days without additional exposure to light (240 Day Power Reserve) Approximate case width 27 mm (1 1/8 inches) not including setting crown