Fangrui Product Details 1. 3-in-1 Receiver Bluetooth Transmitter With Call Aux Car Bluetooth Adapter 2. Features: 3. Receivetransmit Two-in-one, One-button Switching Is More Convenient 4. Bluetooth 5.4 High-performance Chip, Stable Transmission, Low Latency 5. Built-in High-definition Noise Reduction Call Effect, Support Aacsbc Audio Decoding, High-definition Sound Quality 6. Large-capacity Battery, Long Battery Life 7. Anti-bending Audio Plug, Lightweight For Use In Multiple Environments, Can Be Carried With You And Used As A Receiver 8. 3.5mm Aux Universal Interface, Suitable For Various Audio Devices 9. High Signal Coverage, 10 Meters Long-distance Transmission 10. Product Parameters: 11. Material: Abs 12. Bluetooth Version: 5.4 13. Transmission Distance: Barrier-free 10m, It Will Vary According To The Actual Environment 14. Frequency: 2.4ghz-2.48ghz 15. Bluetooth Transmission Distance: 10 Meters 16. Bluetooth Receiving Distance: 10 Meters 17. Bluetooth Receiving Function: Connect 1 Mobile Phone 18. Bluetooth Transmitting Function: Connect 1 Pair Of Bluetooth Headphonesbluetooth Speakers 19. Battery Capacity: 180mah 20. Charging Time: About 2 Hours 21. Playing Time: About 10 Hours (receiving Mode), About 8 Hours (transmitting Mode) 22. Product Size: About 53 X 20 X 12mm