Features 1.BLUETOOTH 5.1: Wireless adapter supports Bluetooth transmission and reception. Suitable for devices with a 3.5mm connector and supports Bluetooth 5.1, simply connect the auxiliary Bluetooth transmitter to a non Bluetooth device to enjoy great sound. 2.STABLE AND LONG LASTING: With Bluetooth 5.1 technology, our wireless sound adapter can establish a more stable connection with devices. The built in 250mAh battery gives the wireless Bluetooth transmitter up to 4?6 hours of playback time, so you can enjoy your favorite wireless content anytime. 3.COMPATIBLE DEVICES: The 2 in 1 wireless Bluetooth adapter is compatible with devices with a 3.5mm connector, including TVs, computers, speakers, tablets, car stereos, home speaker systems, headphones, amplifiers, mixers, and other device interfaces with sound input and output. 4.EASY TO USE: Bluetooth transmitter is very easy to install and use, plug and play. It is very simple to switch between transmitter mode and receiver mode with one key on. 5.COMPACT AND PORTABLE: The compact design of this Bluetooth transmitter receiver can save your space. You can easily travel with this Bluetooth adapter without any hassle. specificationItem Type: Bluetooth Transmitter Receiver Material: ABS Bluetooth Version: 5.1 Transmission Method: SBC, AAC Bluetooth Protocol Support: A2DP, AVRCP Function Mode: Bluetooth Receive, Bluetooth Transmit Transmission Distance: 10m/10.9yd Interface Type: AUX (IN and OUT) 3.5mm Sound Interface Input Voltage: Type C 5V 1A Battery Type: 250mAh Lithium Ion Battery (built In) PackageList 1 x BluetoothSoundTransmitterReceiver 1 x SoundAdapter 1 x RCACable 1 x 3.5mmSoundCable 1 x TypeCPowerCable 1 x InstructionManual