Features: Bluetooth Transmitter Receiver: The Bluetooth 5.3 Transmitter Receiver has a 3.5 mm jack. As a Bluetooth transmitter, you can connect it to a TV or computer that does not have Bluetooth to transmit audio to Bluetooth headphones or speakers. In receiver mode, connect to old TVs, speakers, car stereos, wired headphones that don't have Bluetooth capability, and they can sync with mobile phones and tablets and receive audio signals wirelessly Hands-free Calls and Navigation: Built-in microphone with the latest CVC8.0 noise cancellation technology for clear hands-free calls or voice navigation, safer and more convenient when driving Bluetooth 5.3 and Stable Connection: Transmits high-fidelity audio formats over Bluetooth 5.3 connection, providing a stable 10-metre connection and the freedom to enjoy CD-like HIFI audio Long Battery Life: The Bluetooth adapter has a built-in 300mAh Li-ion battery that can work for up to 7.5 hours when in use. It takes only 2 hours to fully charge with the Type-C fast charging cable, so you can use it while charging Plug and Play Convenience: No driver installation is required to use the Bluetooth audio adapter. Support TF card plug and play, connect wired headphones, directly when the MP3 use, you can enjoy the music at any time Wide Range of Compatibility: The Bluetooth adapter supports 3.5mm AUX connector and is compatible with speakers, old AV receivers, car stereos and home stereos. Easily add high-quality wireless capabilities to your sound system Portable Mini Design: Equipped with high-definition LED display, real-time display of the use of the status, lightweight and compact mini design makes it space-saving, easy to carry with you Bluetooth Transmitter Receiver 3.5mm 1.TX mode means it can be used as a Bluetooth transmitter to transmit audio from your TV/PC/projector/tablet to Bluetooth headphones/speakers/headphones/bar speakers. 2.RX mode means it can be used as a Bluetooth receiver to transmit audio from your smartphone/PC/tablet to wired speakers/old amplifier/stereo/wired headphones 3.TF Mode: Insert TF card to play music from TF card, which can be used as MP3 (Maximum support 64G) 4.Bluetooth 5.3: Easily connect to PC, smartphones and tablets with different Bluetooth versions via Bluetooth. Stable and fast connection 5. Built-in microphone: Support hands-free calls, support navigation apps to transmit voice notifications, safe driving 6. Easy to use: Plug and play, no driver installation required 7. Compatibility: RX mode can be used for car stereo, home stereo, audio music streaming sound systems, amplifiers, speakers, headphones. And TX mode can be used for TV, PC, desktop, MP3, MP4, etc. Product parameters: Bluetooth Version: 5.3 Effective Operating Radius: 10 (m) Interface: 3.5mm (AUX) Audio Header Transmission Rate: 100 (Mbps) Operating Frequency: 2.4 (GHz) Bluetooth Format: A2DP/AVRCP/HSP Product Dimensions: 2.35 x 1.61 x 0.59 inches Product weight: 1.55 oz Battery: 300mAh RX operating time: 7.5 hours TX operating time: 5 hours Voltage: DC 5.0V Charging time: 2 hours Outputs Interface: 3.5mm stereo jack Packing list: Bluetooth Audio Transmitter Receiver Host 3.5mm Audio Cable Type-C Charging Cable Manual