Feature: 1.RF stereo wireless headphone with 915MHz ISM Band 2.Operate distance up to 500 meters 3.Several headphones can be used simultaneously with one transmitter 4.Active noise reduction system for audiophile sound quality 5.Double PLL system for ultimate frequency stability 6.Enjoy stereo music wirelessly any time and any where 7.Suitable for any kinds of audio device with 3.5mm jack, like CD/DVD/TV/PC etc 8.Automatically mute for headphone and auto power off if no signal is received about 10 minutes 9. Led Flashing Light will sparkling along with rhythm of music Specifications: 1.System: UHF/RF 2.Modulation: FM Mode: stereo 3.S/N ratio: ≥75dB 4.Channel separation: >35dB 5.Distortion: <1% 6.Frequency response: 30 - 20,000Hz 7.Power supply of headphone: 600mha 8.Power supply of transmitter:420mha Package: 1) 10 x LED headphones 2) 1 x transmitters 3) 1 x professional transmitter adapters(US/EU Standard) 4) 1 x 3.5mm audio cables 5) 1 x RCA cables