Powered by Tough Solar technology, the G-Shock GWB5600CY-1 arrives in a black resin construction with bold yellow accents along the dial. The ultra-reliable watch connects to your smart phone via Bluetooth, allowing you to access various timing features with ease - and it even comes with a convenient phone finder feature. The watch also features radio-controlled Multiband 6 timing, with a built-in antenna for ultra accurate time keeping.