1. Supports A2DP AVRCP headset protocol. 2. Bluetooth V2.1 technology is used to ensure fast easy connection and clear interference-free voice. 3. Can work with bluetooth cellphones and PCs offering wireless connection with a speaker. 4. Coupled with a bluetooth transmitter it makes sure you can play music on your CD/DVD/MP3/PDA/IPod/TV wirelessly. 5. Serves to transform a common speaker into a wireless bluetooth speaker and a 3.5DC wired headset into a wireless bluetooth stereo headset. 6. Comes with wide compatibility with bluetooth transmitters in addition to bluetooth mobile phones and computers.