Aftershokz Open Ear Wireless Stereo Headphones Bone Conduction Technology Uses Vibrations to Transmit Sound Waves Directly To The Cochlea OpenFit Assures Unmatched Ambient Sound Awareness and Extended Comfort PremiumPitch Patented Dual Suspension Transducers Guarantee the Finest Bone Conduction Audio Nanotechnology Treatment Effectively Repels Sweat When Used While Working Out Be Safe, Be Open - Provide An Ear Opening Experience