1. Bluetooth solution: 5.3 2. Transmission range: 10 meters 3. Sensitivity：99±3dB (0dB/1kHz@VOL=MAX) 4. Frequency response：90Hz-20KHz（-10dB） 5. THD：10%THD 6. SNR：≥80dB 7. Speaker：4”*1 8. Output power：12W(RMS)/24W(Peak) 9. Battery: 3.7V/2400mAh 10. Charging voltage: 5V/2A 11. Charging time: about 3.5H 12. Play time: 3H(100% volume), 10H(50% volume) 13. Product size：269(Handle height is not included)*232*118mm 14. Support: BT/AUX/USB DIS/MIC/FM/REC 15. TF card support: MP3/WMA/WAV