waistband teaching amplifier

Product features: 1:D-80 portable mini amplifier isfor teaching with high performance-to-price ratio, the loudspeaker appearance generous, easy to carry, simple operation, apply to teachers' teaching and sells promotion, traveling and camp or camping etc. 2: amplifiers, frequency response has stable performance, low power consumption, two advantages of lithium battery electric batteries, use for a long time, could reach6 hours, with low voltage protection function. 3: for ABS material shell, loudspeaker cabinet, can hang with worn on the waist. Standard packing: wear a microphone attached, host 1 and 2 li-ion battery cells, braces, power adapter, a manual. Second, the technical parameters: Frequencyresponse 150Hz-15kHz Standardpower 10W Maximumoutputpower 12W Outputimpedance 4Ω Operatingtemperature -10-45degrees Workingvoltage 12V120MA BatterySpecifications 1000Malithium Hostvolume 123×80×30mm Hostweight 200g Notes: 1 please don't head wears a microphone and speakers in the same horizontal plane. 2. Please do not use hand holding a microphone cartridge. 3 when the following questions, please replace the battery: 1>.the power indicator does not shine. 2>.microphone voice. 3 >.distortion. 4. Please use the nimh batteries, avoid leakage damaged goods.