1.Receive (RX) signal and transmit (TX) signal are two-in-one, and can be switched freely, suitable for a variety of devices. 2.Receiving mode: connect to an audio playback device with a speaker, receive Bluetooth signals to wirelessly. Such as, The car audio becomes a Bluetooth speaker in seconds, supports automatic reconnection, and enjoys mobile music.Audiobooks, high-definition voice navigation broadcasts, driving 3 Transmitting mode: connect to an audio output device, transmit Bluetooth signals, and through paired wireless headphones Bluetooth speakers. 4.Supports high-definition audio encoding, high sampling rate, clear sound quality, noise, current sound, restore sound details, and enjoy beautiful music. 5.Built-in large-capacity battery, charging for 2 hours, Listen to music for about 14 hours, more than wireless headphones. 6.Working mode indicator light, working status is clearly visible Receiver Mode:Blue Light Transmitter Mode : Red Light 7.10 meters long-distance transmission is continuous, you can listen to it even in a corner. The actual product may have color difference due to different light or display Attention: For earphone, please press the reset button first to reset it Specifications: Product Name: 2 In 1 Wireless Bluetooth Audio Adapter Supported devices: computer, switch, mobile phone, TV, car Bluetooth version: 5.3 Interface: 3.5mm Forward transmission distance: 10 meters Battery: 250mAh High Definition Support: None Content: AUDIO WIFI Standard: None Wireless Type: bluetooth Interface: TYPE-C Colour:Black Material:ABS Package Contents: 1 x Bluetooth Adapter 1 x type-c charging cable 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.