Casio G-Shock Gravitymaster Men's Watch GR-B300-1A Shock Resistant Mobile link Bluetooth Tough Solar G-SHOCK G-LIDE Take your full-metal analog style

Take your full-metal analog style straight to the water

5 daily or one-time alarms

accented with touches of the bright yellow used for emergency rescues and safety signs

a round graphic digital display between 1 and 2 o'clock

launched a new color series-black

Casio G-Shock Gravitymaster Men's Watch GR-B300-1A Shock Resistant Mobile link Bluetooth Tough Solar G-SHOCK G-LIDE Take your full-metal analog styleFeatures MASTER OF G AIR GRAVITYMASTER The skys the limit! Introducing the GRAVITYMASTER GR B300, a piece of aviation inspired professional gear designed to work even in the harshest environments, from the G SHOCK MASTER of G line. The GR B300 features a Carbon Core Guard structure, which delivers the shock resistance, rigidity, and corrosion resistance of carbon material used in aircraft fuselages. The carbon fiber reinforced resin case and the