Martel’s improved Wireless Partner in-car audio-video recorder now features an 800Mhz microphone system with an extended range and 16 frequencies. It allows up to 16 officers to communicate at the same scene without causing interference. The system transmits audio up to 1,500 feet in all conditions and automatically activates the in-car audio and video recorder when used. The transmitter is smaller than a badge and can be used with or without a corded microphone. A desktop charging unit is included.