Portable Voice Amplifier with Wired Microphone Headset Rechargeable Speaker Loudspeaker (Black) Small but very powerful if you are looking to purchase a personal voice amplifier that is small in size and lightweight, then this model is ideal. It is a portable microphone speaker with 30 watts output power, which can clearly amplify your voice and help protect your vocal cords, allowing you to be easily heard by 25 to 100 people. Long battery life the compact voice amplifier features a high-capacity 2200mAh rechargeable lithium-ion battery that provides up to 12 hours of operation from a full charge. Charging is simple using the included USB cable, and it takes only 3 to 5 hours for a full charge. Comfortable and portable the loudspeaker comes with an adjustable band for wearing around the waist or neck. It also includes a back clip for attaching to a belt or waistband. The wired headset microphone has an adjustable gooseneck design that positions close to your mouth for optimal sound pickup. Stable performance this voice amplifier delivers reliable audio performance. Ideal for teaching, training, singing, coaching, tour guiding, presentations, yoga classes, outdoor speaking, and other applications where voice projection is needed. Product dimensions: 8.4 x 9.2 x 2.8 cm