New, Unused Shipped Anonymously. Upgraded Version: v5.0 → v5.4 Easily make devices without Bluetooth wireless. Transmitter and Receiver - Two-in-One Transmission Mode (Red Light): Connect this product to a TV or audio player that doesn't support Bluetooth, and listen with Bluetooth headphones, etc. Reception Mode (Blue Light): Connect this product to a speaker or car stereo that doesn't support Bluetooth, and enjoy audio from a smartphone, etc. Main Compatible Devices: TVs, computers, smartphones, car stereos, headphones, speakers, earphones, power amplifiers, etc. Contents: Adapter Body 3.5mm AUX Audio Cable Simple Instruction Manual (English) Shipping is planned via Yu-Yu Mercari Bin's Yu-Packet Post Mini. Thank you.