1.It Can be used in all digital products with audio input / output (3.5mm Stereo and Car ),just need to connect the audio output / input port. USB Bluetooth adapter can wireless connections between your Phone and TV,PC,Home stereo system,and other devices 2.2 in 1 Wireless Adapter,durable and ,easy carrying and space saving. Suitable for computer,TV,projector (transmit mode) / speaker,earphone (receive mode) 3.When the light is blue,it indicates the transmitter mode. When the light is red,it indicates the Receiver mode 4.Low latency for high-fidelity stereo sound,-free content streaming in transmitter mode. Wireless Bluetooth adapter allows you to enjoy 5.HiFi stereo music without wire restriction,providing you a more convenient and perfect experience 6. advanced Bluetooth 5.0 technology, Long-range wireless range up to 10 (33 feet), more stable and faster signal Product name:2 in1 Bluetooth Transmitter Receiver Adapter Bluetooth Version:Bluetooth5.0+ Supply Voltage:DC/5V Input Interface:3.5MM +USB Output Interface:3 5MM Distance:10 Transmitter Range:Computer /TV /Projector /MP3 Receiver Range:Ordinary speaker/ car Product weight:about 8g colour:Black Material:ABS size:42 x 25 x 11mm Package Contents: 1 x Bluetooth 5.0 Audio Transmitter/Receiver Adapter 1 x 3.5mm Aux Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.