Casio Tactical G-Shock Classic 10-Year Battery Digital Watch - Men's Green One Size. The digital GD010 delivers handy features like world time and stopwatch as well as a high-brightness LED light which can be easily accessed from the large button on front of the case ensuring visibility even in the dark. Made with bio-based resin and equipped with a 10-year battery this G-SHOCK is great if you want to reduce environmental impact. Specifications for Casio Tactical G-Shock Classic 10-Year Battery Digital Watch - Men's: Manufacturer: Casio Size: One Size Gender: Male Fabric/Material: Resin Case Diameter: 51 mm Water Resistance Level: Water Resistant Water Resistant Mark: 200 m Weight: 65 g Battery Life: 10 Years Battery Type: Lithium Metal CR2032 Lens Material: Mineral Glass Weather Resistance: Shock Resistant Age Group: Adults Features of Casio Tactical G-Shock Classic 10-Year Battery Digital Watch - Men's Shock Resistant Water Resistant to 200 Meters 10-Year Battery Life Stopwatch Countdown Timer 5-Alarms LED Super Bright Backlight 12/24 Hour Format World Time Package Contents: Casio Tactical G-Shock Classic 10-Year Battery Digital Watch - Men's Casio GD-010-3CR: Tactical G-Shock Classic 10-Year Battery Digital Watch - Men's Green One Size