[Casio] Watch G-Shock []GRAVITYMASTER Equipped with Bluetooth Tough Solar Biomass Plastic GR-B300-1AJF Men's Black

Introducing the aviation concept GRAVITYMASTER GR-B300 series from the G-SHOCK MASTER OF G series aimed at professionals working in harsh environments. [Shockproof structure & 20 ATM waterproof] Adopts a shockproof structure that is resistant to shock and vibration. It is also equipped with 20 ATM water resistance, allowing it to be used in a variety of locations and situations. [Tough Solar] Casio's unique solar charging system that stably operates various functions that are subject to heavy loads by combining a solar panel that generates electricity even with a small amount of light and a large-capacity secondary battery [Mobile link function] Functions can be linked with compatible smartphones via BluetoothⓇ communication. [Other product specifications] Please check the explanation column.