Separate earphones that can be used with the CEECOACH bluetooth instruction system.
Your students cannot talk back with these "standard" ears, of course, but on the other hand, which instructor wants that?

earpiece PSG

roll earphone

basic oortje

equiteacher earpiece flex

equiteacher oortje

equiteacher klem oortje

earphone ax


spare set of earpiece / micro

design oortje

equiteacher 16 oortje

head ear neck oortlefoon

extension cord microphone / earpiece