Description This product is a wireless voice amplifier. It has a 2200 mAh battery for long-term use. It strengthens the voice and relieves stress in the throat. The amplifying sound is clear, crisp, noise-free and distortion-free and covers about 1000, loud enough for everyday use. This product is the best protection for your throat. Characteristics Kolor: Black. Material: ABS. Size: 9x8,4x2,8 cm. Battery capacity: 2200 mAh The amplifying sound is clear, crisp, with no noise or distortion. Compact size and light weight. You can use the back clip to attach it to your belt or pocket. You can also use the strap to tie it around your waist or around your neck. Built-in lithium battery with a capacity of 2200 mAh. Working time is up to 10 days after charging. Supports TF playback (Micro SD) MP3 audio playback: Repeat a single melody, loop all music, and switch songs. Wired head microphone can be adjusted. You can adjust the distance between your mouth and the microphone. Suitable for teacher, singer, tourist guide, etc. list of packages 1 x Voice Amplifier