... Smart Phones,Use with MP3 PlayersUse with Stereo Systems. Features:Wireless Headphones.Wireless Net-Chat.(Skype, VOIP, MSN & Yahoo Messenger) ... products with audio output such as rear projector, computer, PS3, XBOX, TV, DVD, MP3, IPOD, CD, HI-FI, VHS ... monitor.Headphone frequency range: 83-108 MHz . 30 metre wireless listening range. Multi directional receiver (will receiver through doors ...