Speaker gives off a clear and crisp sound, no noise and no distortion! * Microphone and speaker compact size (7.2 x 5.7 x 2.2 inches) and light weight (14.392 ounces). * Voice Amplification System comes with an adjustable band you can use around your waist but also has a clip on the back of the unit you can clip on a belt or pant waistband. * Portable Loudspeaker built in 1050 mAh rechargeable lithium battery. Continuous working time upwards of 8 hours. * You can use USB cable included to charge this mini voice amplifier. Only needs 3~5 hours to fully charge it. * Microphone amplifier supports MP3 audio playing and TF (Micro SD) card playing & USB flash driver playing. Can repeat single tune, loop all music and switch songs. * Portable Speaker provides a sound system for a variety of events