Portable amplifierZOWEETEK Mini Voice Amplifier

Portable amplifier is lightweight (0. 36 lb.). You can use the back clip to fix it on your belt or pocket. You can also use waistbelt to tie it around your waist or hang it on your neck. Built in 1800 mAh rechargeable lithium battery. Continuously working time is up to 12 hours. You can use USB cable to charge this mini voice amplifier. Only needs 3~5 hours to fully charge it. Supports MP3 audio playing: TF (Micro SD) card playing & USB flash drive playing. Can repeat single tune, loop all music and switch songs. Supporting 3. 5mm AUX audio input (Mic port can be used as AUX por