Kustom Signals Expanse DSS kit AA606. This is for bundle of Base, Battery and charger. (What you see is what you get) see pics. This came from all working unit. So it may show minor scratches. Condition is Used. Description according to manufacturer. The Expanse DSS mic is one of the best performing wireless audio systems in this market, offering 2500 feet of range and a transmit time of 15 hours. The Expanse DSS also provides superior performance through walls (i.e. domestic dispute calls) and around solid objects (like tractor trailers). Activate a recording from outside the vehicle with the press of a button. Stopping the recording automatically places the Expanse into battery saving standby mode. Each Expanse transmitter can be used in any Expanse-equipped vehicle.