1. Output power: 10w + 10w 1. Wireless Bluetooth stereo playback + Bluetooth call2. Channel: 2.0 (stereo) 2. FM fully automatic FM radio playback3. Impedance: 4 ohms 3. USB data transmission + digital audio input playback4.DC charging: 9v—2A 4.TF card / U disk extended music playback5. Sensitivity: 85dB 5. AUX3.5 audio input playback6. Input interface: 3.5mm 6. Voice menu prompt7. Speaker unit: 80mm (3.0 inches)8. Frequency response range: 90hz—22khz9. Battery capacity: high-density lithium battery (built-in 5200mAh)10. Loudspeaker: Full-frequency subwoofer + low-frequency booster radiator system11. Product size: 245mm * 140mm * 92mm