TONORPortable Voice Amplifier for Teachers, Rechargeable Mini Pa System with Wired Headset Microphone and Waistband, Megaphone Speaker for Classroom, Training, Yoga, Speech, Meeting, Tour Guides K10

TONOR Portable Voice Amplifier for Teachers, Rechargeable Mini Pa System with Wired Headset Microphone and Waistband, Megaphone Speaker for Classroom, Training, Yoga, Speech, Meeting, Tour Guides K10

NORWII S358 Portable 2000mAH Rechargeable Voice Amplifier with Wired Microphone Headset & Waistband, Personal Microphone and Speaker for Teachers, Presentation, Tour Guides (White)

ZOWEETEK ZW-Z258 Portable Rechargeable Mini Voice Amplifier for Teachers with Waistband, Portable Speakers Supports MP3 Format Audio for Speech, Class, Training,Tour Guide, Power Amplifiers