Norwii Wireless Voice Amplifier for Teachers, Portable Bluetooth with 2 Headset Microphone, Microphone Speaker Mini Megaphone PA System Classroom, Tour Guides, Speaking, 15W5200mAh

Original 15W Output Voice Amplifier - Highly praised for teaching environments, whether in-person, online, or hybrid. The portable voice amplifier for teachers delivers loud, crisp, original sound that easily covers areas from 2,000 to 10,000 ft². It helps protect your vocal cords — speak at a normal volume without straining your voice 30m Wireless Range - Enjoy free movement up to 30 meters away from the amplifier without constantly wearing it, easing the burden of extended use. The included wired microphone serves as a handy backup for the wireless mic Simple and High Reliability - Designed specifically for teaching, automatically pairs with the wireless microphone when powered on, making it incredibly easy to use. Built with high-quality chips and premium circuit design, and assembled using imported SMT equipment, this voice amplifier delivers exceptional reliability for daily teaching with great performance Long Battery Life - 5200mAh Massive Battery supports full-day use on a single charge. The amplifier takes only 3–4 hours to fully charge via the universal USB-C port and provides up to 12 hours of continuous amplification. The wireless microphone charges in just 2 hours and lasts up to 35 hours. Stay focused on your work and say goodbye to battery anxiety DSP Anti-Feedback Technology - Advanced DSP processing effectively suppresses harsh feedback howling, ensuring natural and clear sound output. To achieve the best results, keep the microphone at least 30 cm (12 inches) away from the amplifier to prevent feedback issues