HAMSWAN&reg; Wireless Bluetooth NFC Stereo Headset Bone Conduction Headphone Earphone with Built-in Mic for Smartphone Tablet (Black) Bluetooth wireless connectivity with the comfort and safety of open ear bone conduction technology Hear what's going on around you - situational awareness - while still using your phone Delivers sound through the listener's cheekbones to the inner ear A wonderful solution for hearing-impaired individuals Lightweight, sweat and water-resistant