No wires necessary. Connect your device and let the good times play.Built-in power bank with two USB ports keeps the party going, and your phones charged, all round long.Take calls, via speakerphone, with a touch of a button. The echo-cancelling technology makes for crystal clear two-way audio.A removable shaft, grippy rubber bottom, and tee-hole spike lets the Sound Caddy ride shotgun with you in the golf cart.