Classroom wireless mics
Classroom Wireless Microphones
2x mics (1 lapel, 1 hand held) $160 (prime) http://www.amazon.com/Pyle-PDWM3500-Wireless-Microphone-System/dp/B00B9FUEM4
4x mics (2 lapel, 2 hand held) $221 (prime) http://www.amazon.com/Pyle-Pro-PDWM7300-Professional-Wireless-Microphone/dp/B004M961GW/ref=pd_sim_sbs_MI_8