1. Play format: MP3/WMA/WAV 2. Bluetooth version: 5.0 3. Bluetooth sound processing: A2DP 4. Working voltage: 12-24V 5. Bluetooth transmission distance: 10 meters 6. Voltage limit: 9-26V 7. FM frequency: 87.5-108Mhz 8. USB output: 5V/2.5A 9. Output interface type: USB 10. Display size: 1.1 inches 11. Material: ABS 12. Can read music in TF card/U disk, and can also connect to Bluetooth to play 13. One key to connect/hang up the call, press twice in succession to automatically dial the last call number 14. AUX audio input, can play music without Bluetooth function 15. Fast charging design, intelligent matching current 16. Battery voltage monitoring display, clear display 17. Size: 8x2x10 cm 18. Weight: about 100 grams
