Specifications: 1. Output power: 15W2. Charging Voltage: DC 5V, 500mA3. Lithium battery: 2000mAh4. Working time:with 50% volume 6~8 hours (musical mode); 10~15hours (MIC mode)5. Charging time: 3~5 hours6. Product size: 98*88*45mm7. Unit weight: 183g8. Available color: Rose Red; Sky Blue; Black9. Working temperature: -10℃~45℃10. Frequency response: 90Hz~18KHzMain Featuers:1. SHIDU patented appearance;2. Stylish, ergonomic and comfortable design;3. Nd-Fe-B magnetic trumpet, strong penetrating power sound;4. Hi-Fi high sensitivity imported MIC, advanced circuit IC, restrain howling effectively;5. Support AUX audio input --- can work as speaker of computer, Pad & mobile phone;6. 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.Standard Package:1 * Main Machine1 * Waistband1 * Wired Microphone1 * 3.5mm Audio Cable1 * DC 5V 500mA Adpater1 * User Manual