This is a professional loudspeaker, using materials and workmanship. Efficient and practical, with high output, low self-noise, high sensitivity, etc., reasonable design, wide application range, especially suitable for tour guides, stations, stage performances, etc. Features -Color: Black -Material: Plastic -Size: 10.00X8.00X3.50cm/3.93X3.14X1.38in -Transmission distance: 100m -Peak output power: 5W -Output impedance: 2 -Output power: DC 5V 500mA - response: 180Hz-18kHz -Playing time: ≈15 hours -This loudspeaker is made of selected materials, durable and good in texture. -Professional design, effectively reduce noise , and make the human voice clearer. -Product design is simple, design, easy to use and install, and strong practicability. -Suitable for lectures, live broadcasts, classrooms and other activities, to provide you with many conveniences. -This is a loudspeaker that is very suitable for broadcasting and sound reinforcement quality requirements, and will provide of convenience for your daily activities. Package list: 1 x loud-speaker 1 x usb cable 1 x belt 1 x headset 1 x Audio cable