GTMEDIA RT05 Bluetooth 5.0 Audio Receiver & Transmitter 2 in 1 Adapter RT05 is a Bluetooth 5.0 receiver and transmitter audio adapter, which it can compatible with all mobile phone or tablet,also can work on the Car, computer, tv, older version speaker etc. Whether you are studying, living or working, share audio at any time. Product parameters: 1. Product model: GT-RT05 2. Bluetooth version: V5.0 3. Support portcol: RX A2DPIAVRC,TX: A2DP 4. Frequency range: 2400-2483.5MHz 5. Sensitivity: -81dBm10m 7.Frequency response: 10Hz-20KHz 8. Signal-to-noise ratio: 75db 9. Audio Performance: SBC decode 10. Interface type: Aux-in 3.5mm audio x 1, Aux-out 3.5mm x 2 11. Power supply mode: Type-C interface 12. Input parameters: DC 5V500mA (2A max) 13. Battery capacity: 3.7V250mAh 0.925Wh 14. Using the length: About 5-6 hours (Charging time: about 1.5 hours)