Power Output                12W Max.
Speaker Impedance       4W
Input Channel                Mic-1: 1.0mV, Line: 250mV
Frequency Response      80-12,000Hz
AC Adapter                   AC: 100-240V, 50/60HZ; DC: 5V, 750mA
Rechargeable Lithium-ion Battery    3.7V, 2000mAh
Headband Microphone Element    Condenser, Cardioid
Dimensions                   W86 × H98 × D44 mm (amplifier only)
Weight (with rechargeable battery)    0.34kg approx. (amplifier only)
Accessories                  Headband microphone, AC power adapter, neck strap.