2-In-1 Wireless Transmitter Receiver - Enjoy Wireless Audio Without More Wire Restrictions. In Tx Mode, Plug In the 3.5mm Aux Jack on Non-Bluetooth Tv, Fitness Equipment/Game Equipment To Transmit Audio To Wireless Headphones. In Rx Mode, Plug Into the Wired Speaker/Car Input Port and You Can Receive Hd Audio From Your Smartphone Via Bluetooth. Bring New Life To Your Old Home Systems. Mini Bluetooth 5.3 Audio Adapter - Bluetooth 5.3 Technology, Ensuring Lower Consumption, More Stable and Faster Wireless Transmission. You Just Need To Connect It with Non-Bluetooth Devices and Then They Can Be Upgraded To Bluetooth Devices. Safe Hands-Free Calling - Built-In Microphone To Answer Calls, Equipped with Noise Reduction Technology To Suppress Environmental Noise and Pick Up Sounds More Accurately. Answer/Hang Up Calls with One Click. This Auxiliary Bluetooth Adapter Also Supports Broadcasting Voice Notifications From Navigation. Provides You with the Safety and Convenience Of Hands-Free Calling While Driving. New Upgraded Tf Card Mode - Directly Insert the Tf Card and Connect It To Your Vehicle, Amplifier, Wired Audio or Any Auxiliary Jack, You Will Have An Audio Experience. If Wired Headphones Are Connected, It Can Be Used As An Mp3 Player and Play Tf Card Music Directly. Supports Multiple Formats (Mp3/Wma/Ape/Wav/Flac). Plug and Play - Plug and Play, No Driver Required, Easy To Set Up. the Built-In Battery Of the Bluetooth Adapter Supports Tye-C Fast Charging. It Can Be Used Continuously for About 5-7 Hours After Being Fully . Make Sure You Enjoy Your Favorite Wireless Content At All Times. the Led Display Screen Is More Convenient To View, Showing the Volume and Power In Real Time, and the Usage Status Is Clear At a Glance.It Has a TFCard Port and Supports TF Card Playback; (The Actual Product Does Not Include a TF Card). Support Audio Equipmentwith Audio Input Interface To Realize Wireless Audio Reception and Transmission; Product Description: Supports Automatic Search and Connection To Bluetooth Devices To Achieve Wireless Audio Transmission, Built-In Cancellation and Anc Noise Cancellation Circuits, Gorgeous Stereo Sound, and More Quality; Built-In Enhanced Signal Transmission Circuit, the Connection Is Faster and More Stable, and There Is No Sound; Compatible with Dual Lossless Audio Formats and Supports Aux In/Out; Automatic Memory Connection Function, Simpler Operation and More Convenient Connection Built-In Lithium Battery, 300mah, Long Battery Life; Smart Compatible, Android, Ios Mobile Phones or Tablets, Devices with Bluetooth Audio Parameter: 1.Bluetooth Solution: 5.3 2. Frequency: 2.4GHZ-2.48GHZ 3.Bluetooth Transmission Distance 10 Meters 4. Bluetooth Receiving Distance 10 Meters 5.Charging Voltage: DC 5V 6.Battery Capacity: 300mAh 7. Working Time: About 6 Hours 8. Bluetooth Receiving Function: Connect 1 Mobile Phone 9. Bluetooth Transmitter Function: Connect 1 Pair Of Bluetooth Headsets Material: ABS colour: As shown Package Contents: 1 x Host 1 x Charging Cable 1 x 3.5mm Male To Male Audio Cable 1 x English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.