Check the listing for details. 2 in 1 Bluetooth 5.0 Transmitter Receiver USB Wireless 3.5mm Audio Adapter Car♓. Color: Black, Condition: New. Listed at 7.97 USD. Feature:1.Receiver Mode: This Bluetooth audio adapter receives the audio signal wirelessly from mobile phone, tablet or game console via Bluetooth, and then transmit it to wired earphones or wired speaker via 3.5mm jack. 2.Transmitter Mode: The Bluetooth audio converter receives the audio signal from computer, TV, MP3/MP4 via 3.5mm jack, and then transmits it to Bluetooth headphones, Bluetooth speakers, Bluetooth soundbar, TWS earbuds via Bluetooth function. 3.Wide Compatibility: It's compatible with Android & iOS smart phones and PAD, almost all BT-enabled audio devices, and stereo system with 3.5mm port. Real-time low latency and high-quality audio transmission. 4.Low Power Consumption: Built-in 200mAh rechargeable battery provides about 10-hour work time, so you can enjoy wireless audio all day long. 5.Bluetooth 5.0: Upgraded Bluetooth 5.0 technology ensures no lag and stable transmission. In receive mode, it can pair with two smartphones at the same time. 6.Plug and Play: Plug and play, no driver needed, quick to start. Simple button design, easy to operate. 7.Portable: Mini size, space saving, simply put in the pocket or handbag for convenient carrying. Specification:Type: Bluetooth TransceiverBluetooth Version: 5.0Protocol Supported: A2DP and AVRCPSupport Multi-Format Decoding: MP3, WAV, WMA, APE, FLACTransmission Distance: >20m (open space)Charge Input Voltage: DC5VPower Supply: 3.7VWorking Time: about 10 hours (depend on audio volume)Charging Time: about 2 hoursSignal to Noise Ratio: more than 95dBBattery: Built-in 200mAh Rechargeable Li-polymer batteryOutput: 3.5mm aux stereo interfaceInput: 3.5mm aux stereo interface Note: Press the volume +/- buttons at the same time right after power on the device to activate the transmit mode, otherwise the transmit function cannot be used. Packing List:1 * BT Audio Transmitter & Receiver1 * 3.5mm Audio Cable1 * USB Charging Cable1 * User Manual