K15-Pro 2 in 1 USB Car Bluetooth 5.0 Audio Adapter Transmitter Receiver with LCD Screen Features: 1. Equipped with Bluetooth 5.0 chip, stable transmission without delay, and lossless sound quality 2. Bluetooth receiving and transmitting two-in-one, no driver, plug and play 3. LCD high-definition digital display, Bluetooth mode and working status are clearly visible 4. The launch mode can display the pairing name, actively search, and refuse to connect blindly 5. Built-in 170mAh polymer battery, continuous listening to songs for about 4 hours, USB direct plug chargingpower supply 6. Support TF card playback, as well as a card reader and computer external sound card (not included) 7. Built-in high-definition microphone, support hands-free calllisten to musicnavigation 8. Memory function, automatically reconnect after the first pairing 9. Stable transmission of obstacle-free signal about 10 meters 10. Product size: 75x25x12mm 11. Bare metal weight: 15.4g