100% brand new and high quality. Two-in-one Bluetooth adapter with Bluetooth receiving and Bluetooth transmitting functions. Bluetooth Transmitter: Add Bluetooth wireless function to your TV, PC, MP3 player, DVD player to enjoy music and sound wirelessly. Bluetooth Receiver: Turn on Bluetooth on all speakers, headphones, and stereo systems. Every time you turn on your device, the transmitter will automatically connect to the last connected device. Enable bluetooth for all 3.5mm media devices (enable bluetooth receive: speakers, headphones, etc; enable bluetooth transmit for: mp3, cd/dvd players, e-readers, tv, etc). The built-in 600mAh battery can guarantee up to 8 hours of portable use time, and can be quickly charged through a USB data cable. Easy to install, plug and play, suitable for any speaker or device. Use standard 3.5mm jack or Bluetooth AD2P connection. Compatible with Android, IOS phone system and PAD and all Bluetooth audio devices, such as TV, speaker, PC, CD player, iPhone, iPod, iPad, tablet, MP3 player or car stereo, etc. Noise reduction and echo cancellation. Compact design, easy to use.