Winbridge 18 watt WB003 Rechargeable Voice Amplifier For Teacher

Technical parameters 1. Output power: 18W 2. Charging Voltage: DC 9V, 650mA 3. Lithium battery: 7.4V,2pcs*1100mAh 4. Working time:with 50% volume 6~8 hours (musical mode); 10~15 hours (MIC mode) 5. Charging time: 3~5 hours 6. Product size: 98*88*43mm 7. Unit weight: 221g 8. Available color: rose red; sky; black 9. Working temperature: -10℃~45℃ 10. Frequency response: 90Hz~18KHz 11. Sound coverage: 2000m2 Main features: 1. Stylish, ergonomic and comfortable design; 2. Nd-Fe-B magnetic trumpet, strong penetrating power sound; 3. Hi-Fi high sensitivity imported MIC, advanced circuit IC, restrain howling effectively; 4. Support AUX audio input --- can work as speaker of computer, Pad & mobile phone; 5. High decoding technology, support TF card & USB flash drive; 6. Intelligent digital function module, low power consumption, high efficiency; 7. Double voice coil design, strong power, deep bass; 8. Professional sound amplifying circuit, amplifying clear without howling