VocoPro SILENTSYMPHONY-RAVE Wireless Audio Broadcast & Headphones SystemOperates in the 900MHz, clear of TV Station Interference Includes 50 Silent Symphony HeadsetsBroadcast Audio to an Unlimited Number of Wireless Headphone Sets Use up to 3 Transmitters SimultaneouslyInternal Battery Built Into Transmitter for Remote Use Transmission Power Level Toggle (High/Low)Available Stereo RCA Audio Input on transmitterAvailable Stereo 1/8” Audio Output on Each Wireless Headphone Set Headphones have an 18Hr Battery Life Off Two AAA Batteries
