Portable Voice Amplifier with Wired Microphone Headset Rechargeable Speaker Loudspeaker (Black) Small but powerful personal voice amplifier designed for clear voice projection. This portable microphone speaker features a 30-watt output power, effectively amplifying your voice while helping to protect your vocal cords. Ideal for addressing groups of 25 to 100 people in various settings. Equipped with a high-capacity 2200mAh rechargeable lithium-ion battery, providing up to 12 hours of continuous use on a full charge. Charges conveniently via the included USB cable in 3 to 5 hours. Designed for comfort and portability, the loudspeaker comes with an adjustable band for waist or neck use. Features a back clip for secure attachment to belts or waistbands. The wired headset microphone has a flexible gooseneck design that positions close to the mouth for optimal sound pickup. Reliable and stable performance makes it suitable for teaching, training, singing, coaching, tour guiding, presentations, yoga instruction, outdoor speaking, and other applications. Dimensions: 8.4 x 9.2 x 2.8 cm