NBA-15 Ahuja Portable Rechargeable Speaker With 1 No Neckband Microphone Price In BangladeshPower Output12W Max.Speaker Impedance4ΩInput ChannelMic-1: 1.0mV, Line: 250mVFrequency Response80-12,000HzAC AdapterAC: 100-240V, 50/60HZ; DC: 5V, 750mARechargeable Lithium-ion Battery3.7V, 2000mAhHeadband Microphone ElementCondenser, CardioidDimensionsW86 × H98 × D44 mm (amplifier only)Weight (with rechargeable battery)0.34kg approx. (amplifier only) Power Output: 12W Max. Speaker Impedance: 4Ω; 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).