This product is a portable loudspeaker, made of materials, and can be used for a long time. capacitor core, intelligent noise reduction, pure sound pickup, real sound reproduction, high sensitivity, high fidelity sound quality. 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 -Frequency response: 180Hz-18kHz -Playing time: ≈15 hours -Made of plastic materials, practical, safe and durable, and can serve you for a long time. -Wireless design, small size, convenient for us to use at any time, and strong practicability. -The method of use is simple, and learning to use will not take up too much time for you. - to the microphone, and the loudspeaker will spread your business, so there is no need to worry about falling off during use. -Suitable for teaching, tour guides, conferences, outdoor explanations, sales promotion, etc. Package list: 1 x loud-speaker 1 x usb cable 1 x belt 1 x headset 1 x Audio cable