Granboard 3s, developed in Japan, the hotspot for soft tip darts. Granboard offers the largest online community in the world. Choose your opponent and challenge them to a match, whether they are waiting for you in Tokyo, New York, Madrid, Amsterdam, or Berlin. Video and audio transmissions can be toggled on and off via a tablet or smartphone. See your opponent and talk to them if you like, and find dart friends in the Dart World community. Free app for Android and iOS for tablet and smartphone. Connection via Bluetooth 4.0. A micro-USB port on the Granboard 3s allows for power supply to the super cool LED lighting on the outer ring of the board.