Features a Japanese quartz movement, calendar function, and a battery life of approximately two years. Size: Approximately 40mm (height) x 40mm (width) x 12mm (thickness) Maximum belt length: 220mm Belt width: Approximately 20mm Water resistance: 30 meters Materials: Case: High-grade stainless steel; Belt: Breathable silicone; Crystal: Sapphire glass, scratch-resistant, highly transparent, rust-proof, and colorfast. Hands: Luminous, making it easy to see the time in the dark. Waterproof: 30-meter water resistance, suitable for showering and swimming. [Set Contents] Main unit, presentation box, instruction manual, and warranty (included in the instruction manual). Shipping with a presentation box will incur additional shipping charges. Battery is dead.