Bipra BTT005 Bluetooth A2DP Stereo Audio Transmitter Adapter With 3.5MM Jack Plug - Bluetooth V 2.1+EDR For audio devices Used for iPod,MP3,MP4,TV,media players Latest bluetooth 2.1+EDR chipset. For Ipod/MP3 player or other audio devices Enable an iPod,MP3 player, TV e.t.c. to transmit audio signals wirelessly via Bluetooth. This Bluetooth adaptor draws power from its built-in rechargeable li-on battery and when fully charged will allow for 10.5 hours continuous use. New model with CSR BC5 chipset, bluetooth V2.1, backward compatible with V2.0/V1.0 Also works with BTR006 bluetooth receiver to wireless your speakers