with USB/SD, music EQ adjustment, wired MIC/Guitar Input Power:65W Frequency Range: VHF 210-270MHZ Power: AC 185V~265V(50-60Hz),one built-in DC 12V/12AH rechargeable battery, external DC 12V power inputFrequency Range: VHF 210-270MHZ one-driven-twoFrequency Response: 50Hz-18KHz±3dBMIC Effect: 25-50mWireless MIC: handheld MIC(plus25 RMB), headphone( plus 40RMB), handheld MIC with priority, 75% of ...