AC In: 220-240V, 50/60 Hz, DC In: 12V 1A, Max. 18V, DC : 12V/2.3Ah (Rechargeable Battery), Power Consumption AC : 20W, 0.1A (at rated output), DC : 30W, 1.6A (at rated output), Output Power 20W Max, Frequency Response 60 Hz - 20 kHz (±3 dB), Charging Time : 12 hours, 12V/2.3 Ah, Lead Acid Battery, 1 pcs