Small But Very Powerful – This personal voice amplifier is compact and lightweight. It features a 30-watt output, clearly amplifying your voice while helping protect your vocal cords. Suitable for use with groups of 25 to 100 people. Long Battery Life – Equipped with a high-capacity 2200mAh rechargeable lithium-ion battery, it provides up to 12 hours of continuous operation on a full charge. Charging is done via the included USB cable and takes 3–5 hours. Comfortable and Portable – Designed with an adjustable band for waist or neck wear. Includes a clip for attaching to belts or waistbands. The wired headset microphone is adjustable. Stable Performance – Features reliable performance with a flexible gooseneck headset microphone positioned close to the mouth. Ideal for teaching, training, singing, coaching, tour guiding, presentations, yoga instruction, and outdoor speaking. Dimensions: 8.4 × 9.2 × 2.8 cm