Unisar Wireless Digital TV Audio Assisted Listening Device System TV Listener Dh1310 For hearing impaied just Press the mic button to Mute the TV sound and the built in mic will turn the headphones into a device that will pick up and amplify conversations around you Compatible with iPod iPhone CD MP3 players TVs. Quick Charge rechargeable battery. 2 4GHz wireless RF radio frequency mono or stereo HI-DEF sound crystal clear music and TV audio. 72 feet open range Made of lightweight plastic for easy use. CHECK OUT OUR VERSEO YOUTUBE CHANNEL FOR A STEP BY STEP SET UP INSTRUCTIONAL VIDEO