Portable Waterproof Voice Amplifier with Wireless Microphone for Teachers — Long Working Hours

Designed for teachers, this portable voice amplifier delivers clear speech through high-level original noise reduction and advanced noise-processing technology. The unit supports phone connection for a faster, more stable link and includes a wireless microphone for hands-free use. Power is provided by a 3.7V 2500 mAh large-capacity battery with faster charging for longer battery life. Media playback options include an insertable TF card/U disk with intelligent decoding, plus audio input playback. It can also serve as an external speaker for computers and other devices.