Feature:1. Bluetooth Connectivity: Support Bluetooth transmission and reception, compatible with devices with a 3.5mm interface, featuring Bluetooth 5.1 for a stable connection and wonderful sound enjoyment.2. Long Battery Life: Equipped with a 250mAh battery, our wireless Bluetooth AUX adapter offers 4 to 6 hours of playtime, allowing you to enjoy your favorite wireless content anytime.3. Versatile Compatibility: This 2 in 1 Bluetooth adapter is compatible with devices that have a 3.5mm interface, such as TVs, computers, speakers, tablets, car stereo, home stereo systems, headphones, amplifiers, mixers, and other devices with sound input output interfaces.4. Easy to Use: The Bluetooth transmitter receiver is user friendly with plug and play functionality. Single key operating makes it easy to switch between transmission and reception modes.5. Compact and Portable: The compact design of this Bluetooth 5.1 transmitter receiver saves space and is perfect for travel, making it convenient to carry along wherever you go.Specification:Item Type: Bluetooth Transmitter ReceiverMaterial: ABSBluetooth Version: 5.1Transmission Mode: SBC, AACBluetooth Protocol Support: A2DP, AVRCPFunction Mode: Bluetooth Receiver, Bluetooth TransmitterTransmission Distance: 10mInterface Type: AUX(IN or OUT) 3.5mm Sound InterfaceInput Voltage: Type C 5V 1ABattery Type: 250mAh Lithium Ion Battery (Built in).Package List:1 x Bluetooth Transmitter Receiver1 x Sound Adapter1 x Cable1 x 3.5mm Sound Cable1 x Type C Power Cable1 x User Manual