Product picture - TeachLogic IRV-3435 CS4 VoiceLink Plus Infrared Wireless Classroom Microphone System with 1 Handheld Microphone & 4 Ceiling-Mount Speakers TeachLogic, IRV-3435, CS4, VoiceLink, Plus, Infrared, Wireless, Classroom, Microphone, System, with, 1, Handheld, Microphone, &, 4, Ceiling-Mount, Speakers Click the image to close this page