Norwii Voice Amplifier Wireless Microphone , 4000mAh Portable Rechargeable Bluetooth Mini Personal Speaker with 2 Headset Microphones for Teachers, Classroom, Meetings and Tour, Black

[Wireless Voice Amplifier] This Norwii voice amplifier delivers 10 watts of clear and gentle sound to cover about 10,000 sq ft (1000 m). Wireless microphones are suitable for public speaking., [Rechargeable Wireless Speaker] This wireless portable voice amplifier includes a built in 4000mAh battery and can be used constantly for around 16-20 hours. The wireless microphone can be used for approximately 6 hours., [Wireless Speaker with 2 Microphones] The amplifier includes 2 microphones, 1 wireless microphone, and 1 wired microphone. UHF technology wireless microphone amplifiers are more resistant to interference. The wireless ear hook is removable., [Multi-Function Personal Amplifier] Norwii amplifier supports Bluetooth, TF card, USB disk play, AUX-in, support for MP3, WMA, and WAV files, as well as cycle play. The computer speaker function allows it to transmit audio through the USB port., [Lightweight and Portable] This PA System Personal voice amplifier weighs 0.56 lb, and the wireless Bluetooth voice amplifier is suitable for teachers to use in the classroom., [Warranty] We provide return and refund without reason in 30 days, and 12- month warranty, and lifetime technical support.