Single Ear Design: The heads are monophonic. Monaural Head Air Tube In Ear Anti-radiation Stereo Ear for Wireless Bluetooth.Acoustic air tube design, uses the principle of air conduction acoustic tube, so that radiation away from vulnerable brain.
Plantronics H101 Encore Binaural On-Ear Voice Tube Office Headset
New 3.5mm Air Tube Anti-radiation Stereo In-Ear Single Headset Earphone With Mic
FC12 Stereo Music Headset Air Tube 3.5Mm Anti-Radiation Earphone In-Ear Headphon
Plantronics H101 Encore Binaural HEADSET Stereo Dual Ear w/ Voice Tube 43466-11
