Norwii Language Amplifier, PA Amplifiers, Portable Mini Cable Microphone Headset for teachers in the classroom and outdoor lectures, teaching, tour guides, USB-C rechargeable.

["Effective for teaching - With an output power of 10 watts, the portable voice amplifier amplifies your voice and ensures that it carries further, so your students can hear better and listen more attentively. Thanks to its lightweight and portable design, it is especially popular with teachers, fitness trainers, tour guides, and at promotional events.","Loud and Clear Sound - 3-inch speaker and a booster circuit make the voice amplifier produce crystal clear sound with good sound quality, effectively saving the teacher's throat. Developed for educators, appreciated by professionals. A must-have for teachers.","Teach without deafening feedback - The voice amplifier uses advanced frequency shifting technology to effectively suppress feedback. To ensure optimal performance, keep a distance of 20 cm between the microphone and amplifier to avoid feedback issues.","Weeks of Battery Life - 2000 mAh battery for 12-15 hours of continuous teaching, 4000 mAh battery for 25-30 hours of continuous teaching. All-day outdoor events without fear of running out of power. USB-C rechargeable.","Simple and Practical, Teacher-Centric Design - Just 2 steps: 1. Turn on the amplifier; 2. Plug the microphone into the MIC port of the amplifier. Now it's ready. Unlike buttons, the analog dial provides finer volume levels. Ultra-lightweight with detachable belt strap - hands-free teaching."]