Hi-Fi INSIDE THE MAGNETIC TRUMPET: Clear and smooth sound; Loop play function, keep your favorite song. EFFICIENT AND STRONG: The speaker or sound system uses dual coil design, offers high output power up to 10W, provides deep bass while consuming little power. ERGONOMIC DESIGN: Removable hanging handle for portable and simple surface design MULTI-FUNCTION: This amazing sound equipment can also work as speaker for computer, iPad cellphone or phone. The system also supports TF card, USB stick and auxiliary cable entry. RECHARGEABLE AND DURABLE WORKING TIME: Built-in 2000mAh rechargeable lithium battery. Up to 8 to 12 hours after a full charge. Product Product features: odic, ergonomic and comfortable design,- Powerful trumpet - clearer and more penetrating; 10W output power, sound range up to 800 x33 a1;Adopt Shidu acoustic amplifier electroacoustic system; Equipped with a special Shidu acoustic microphone - Original Hi-Fi sound amplifier, Super MP3 encoding technology - support TF card and U flash disk. 2000 mAh lithium battery Peak output power: 10 watts Frequency response: 90Hz-18kHz Output Impedance: 4 x3 a9; Working temperature: -10 degrees to 45 degrees Charging voltage: DC 5 V 500 mA Extension time: 8 to 12 hours music playing time: 6 to 10 hours Charging time: 3 to 5 hours Product size: 116 * 86 * 46mm / 285g Scope of delivery: 1 * voice amplifier 1 * USB charging cable 1 * Wired Microphone Hip Belt 1 * wireless microphone 1 x user manual