The teacher's special microphone and amplifier designed to provide clear and powerful sound amplification in the classroom. The device features a robust microphone and speaker, ensuring that the teacher's voice is heard by all students. Its compact and lightweight design makes it easy to carry and use, offering convenience and efficiency for daily teaching activities. Features - Color: White -Material:Plastic - Size: 9.00X8.50X2.50cm/3.54X3.34X0.98in -Power supply: built-in lithium battery -Interface type: USB -Output power: 5W -SNR: >=70db -Running time: 8 hours -Effective distance: 10 meters -Extended storage: 32GB -Battery capacity: 2200 -Portable and lightweight: this mini voice amplifier is designed for easy portability, making it ideal for teachers who need to move between classrooms or locations -Clear and loud output: ensure is heard with the powerful amplification of this device, which effectively projects your speech for clear communication -Exceptional sound quality: delivering excellent audio performance, this amplifier ensures that is transmitted clearly and accurately -Simple operation: with its userfriendly design, this voice amplifier is easy to set up and operate, allowing teachers to focus on their lessons -Versatile applications: suitable for various uses, this portable microphone and speaker suitable for teaching, presentations, tours, and more Package list: 1 x loudspeaker 1 x headset microphone 1 x USB cable 1 x strap