The Casio G-Shock G-7900 watch is a robust digital watch designed for tough and marine activities, featuring shock resistance, water resistance up to 200 meters, low-temperature resistance (down to -20°C), and equipped with tide and moon phase indicators. It comes with a sporty design with large buttons for easy use, a durable resin strap, and an approximate battery life of up to two years. CASIO CASIO +2 Key Technical Specifications: Case: Made of durable resin with dimensions [missing dimensions] mm and a light weight of 68.2 grams. Durability: High shock resistance and 200-meter water resistance (20 bar). Environmental Resistance: Operates in very low temperatures down to -20°C. Display: Segmented digital display for easy readability, protected by scratch-resistant mineral glass. Marine Features: Tide Graph and Moon Phase data display. Additional Functions: World time (48 cities), stopwatch with 1/100th second precision, countdown timer, 5 daily alarms, and Auto LED backlight. Battery: Approximately 2-year battery life. Material: Rubber Brand: Casio Movement Type: Digital Watch Size: 42mm Features: Water Resistant