Portable Voice Amplifier with Wired Microphone Headset, Rechargeable Speaker (Black) Small but Powerful – This personal voice amplifier is compact and lightweight. It delivers 30 watts of output power, clearly amplifying your voice and helping protect your vocal cords. Ideal for addressing groups of 25 to 100 people. Long Battery Life – Equipped with a 2200mAh rechargeable lithium-ion battery, it provides up to 12 hours of continuous use on a full charge. Includes a USB charging cable; full charge time is 3–5 hours. Comfortable and Portable – Features an adjustable strap for wearing around the waist or neck. Includes a clip on the back for attaching to a belt or waistband. The wired headset microphone is adjustable for comfort and optimal positioning. Stable Performance – Designed with a flexible gooseneck microphone that positions easily near your mouth. Suitable for teachers, trainers, coaches, tour guides, presenters, yoga instructors, and outdoor speaking applications. Dimensions: 8.4 × 9.2 × 2.8 cm