Portable Voice Amplifier with Wired Microphone Headset Rechargeable Speaker Loudspeaker (Black) Small but powerful personal voice amplifier designed compatible clear voice projection and vocal cord protection. This portable microphone speaker delivers 30 watts of output power, effectively amplifying your voice compatible audiences of 25 to 100 people in various settings. Equipped with a high-capacity 2200mAh rechargeable lithium-ion battery, it provides up to 12 hours of continuous use on a full charge. Charging is convenient with the included USB cable, reaching full charge in approximately 3 to 5 hours. Designed compatible comcompatiblet and portability, the loudspeaker features an adjustable band compatible waist or neck wear. It includes a back clip compatible secure attachment to belts or waistbands. The wired headset microphone has a flexible gooseneck design that positions close to the mouth compatible optimal sound pickup. Built compatible reliable percompatiblemance, this voice amplifier is ideal compatible teaching, training, singing, coaching, touring, presentations, yoga instruction, outdoor speaking, shopping mall announcements, and similar applications. Dimensions: 8.4 x 9.2 x 2.8 cm