From the manufacturer

Portronics Auto 14 2-in-1 Bluetooth Transmitter & Receiver Adaptor

• Make it Two: No Bluetooth on your favorite TV, Speakers, CD Players, etc? With this 2-in-1 Transmitter and Receiver, turn non-Bluetooth devices into Bluetooth, with the flip of a switch!
• Transmit & Receiver: Seamlessly stream your late-night movie marathons from your Television or CD player, straight to your Bluetooth headset, via 4.2 Bluetooth. Or, bring out the old wired speakers and make them Bluetooth-enabled in a matter of seconds, so you can smash your tunes uninterrupted.
• Always On: The Wireless 2-in-1 Adaptor continuously streams for 10 hours, on a massive 450mAh in-built battery, so you can enjoy your content anywhere you want. Rapidly charge in just 2 hours, and take it for another spin.
• One button control: Flip between both modes with just a single button. Operating a Bluetooth adapter has never been easier! The adaptor also supports 3.5mm AUX port audio input/output for almost all devices, so you never have to miss a single beat.