Fangrui Product Details 1. Description: 2. Model: T7-4 3. Technologies: Bt5.1, A2dp, Avrcp (receiver Mode Only) 4. Operation Range: Up To 10m (without Any Blocking Objects) 5. Dimensions: 45mm*20mm*11mm 6. Specifications: 7. This Extremely Portable, Lightweight Wireless Audio Transmitter; Receiver Is An Ideal Wireless Audio Solution For A Wide Range Of Situations And Uses. 8. Transmitter Mode:wirelessly Streams Audio From Your Non-bluetooth Tv, Home Stereo System, Or Cd Player To Your Bluetooth Headphones Or Speakers 9. Receiver Mode: Wirelessly Streams Audio From Your Bluetooth-enabled Phone, Tablet, Or Computer To Your Wired Stereo, Speakers, Or Headphones 10. Switch Between Transmitter And Receiver Modes With The Simple Flick Of A Switch. Effortlessly Connect Using Advanced Bluetooth Technology And 3.5mm Audio Cable (included). 11. Broad Compatibility: With The Included 3.5mm Cable This Receiver Transmitter Adapter Can Widely Be Used On Your Car,computer, Laptop, Home Stereo System, Headphone, Smartphone, Mp3 Player, Cd Player, Etc. 12. Operation Range: Up To 10m (without Any Blocking Objects) 13. Package Included: 14. 1x Bluetooth 5.1 Audio Transmitter/receiver Adapter 15. 1x 3.5mm Aux Cable Suitable For Everyday Use