Safe sound is our first priority. The award-winning Blog.Fish Tech are the only wireless headphones to offer uninhibited situational awareness, complete with a sound quality that will shock you. The bone conduction was using the newest 4.0 Bluetooth ,it suited all the bluetooth equipment.A patented design and bone conduction technology guides mini vibrations through your cheekbones to your inner ears, delivering sound without plugging or covering them. Exceptionally lightweight and comfortable headphones, this unmatched open ear listening experience from Aftershokz is further enriched through innovative technologies that make it possible-and safe-to tune in to music or voice communication without tuning out the world. Purchase includes a breathable storage pouch, micro-USB charging cable, adjustable tension band, reflective sticker. AfterShokz Bluez 2 open ear wireless stereo headphones - safe, comfortable, responsible.