Enhanced Data Rate Small-size and Light-weight 3.5mm Universal Bluetooth Wireless Stereo Music Audio Transmitter for iPod/iPhone/iPad/iPod Touch/iPod Shuffle, Sandisk Sansa, Zune, Tablets, SONY PSP, Nintendo DS, MP3/MP4, PCs, PDAs, any 3.5mm Jack Device
It is small and convenient to use. It works as expected and has very good battery life. It works well with my mp3 player and Oticon Streamer.