Casio MT-G Bluetooth Enabled Radio Solar MTG-B1000B-1AJF WatchProduct Highlights Introducing a new shock resistant structure for the MT G series from G SHOCK, always equipped with advanced impact resistance. Adopting the "New Core Guard Structure," which integrates the lug connecting the band with a pipe to create a wall, forming a box shaped frame to protect the module. Furthermore, carbon fiber reinforced resin is used for the material of the center case to achieve lightweight and enhanced impact resistance.