Voice Amplifier for Teachers,SHIDU PA System Speaker 18W Portable Megaphone (Work of 12 hrs) with Wired Mic Headset,Waterproof Ipx 5&Built-in Rechargeable 4400mAh Battery.for Teaching, Meeting&Speech

1【18 watt Woice Amplifier】 the expanded sound can cover 400 yards, suitable for 400 people,Adjustable volume high and low your original voice expanded and put out clear sound, (no noise, no distortion, no interruption).
2【Megaphone working time 12 hours】Rechargeable voice amplifier with built-in 4400mAh lithium battery, amplification time up to 12 hours. Music playback time up to 12 hours. Only takes 3-5 hours to fully charge. Can be used as a rechargeable battery to charge your device in outdoor
3【IPX5 waterproof 】Waterproof Design can resist gentle water spray and splash.Featuring a smooth Anti-fingerprint fabric design rubber exterior that protects the pa speaker system from scratches and impact, Ultra-portable voice amplifer Loudspeaker for travel & hiking & beach &pool &bathroom and more outdoor activities.
4【Multifunctional microphone amplifier】supports TF (Micro SD) card playback, USB flash drive playback and 3.5mm AUX audio input (microphone port can be used as AUX port) Recording, loop playback, Bluetooth 5.0 (can be connected to cell phone Bluetooth 5.0)
5【Warm Tips and Guarantee】Please keep the speaker and mic for a distance and facing away each other to avoid the signal affected.Worry -Free Warranty.We provide return and refund without reason in 30 days,12 Months F-ree repair and replacement.