CASIO GA-B001CY-1AJF Bluetooth G-SHOCK Caution Yellow Shock Resistant Solar Powered Stylish DesignProduct Highlights G SHOCK Caution Yellow Series Since its launch in 1983, the tough watch G SHOCK has continued to evolve in pursuit of unyielding strength. The Caution Yellow series features an eye catching combination of black and yellow. The base models include the GW B5600 with radio solar and Bluetooth(R), the GA B2100 with tough solar and Bluetooth(R), the GA B001 with Bluetooth(R), the big case GA 100, and the GA 700 with a front button. Each