Lightweight and comfortable, Trekz titanium open-ear wireless bone-conduction headphones are the smart alternative to traditional in-ear sport headphones and earbuds because they let you keep your ears open so you can hear surrounding sounds. Bone Conduction technology, an open ear design and a suite of audio Features deliver premium music play and crystal clear calling without compromise. Designed with athletes in mind, Trekz titanium are sweat proof, secure, and will allow you to hear your surroundings - no matter where life takes you. With leaks layer technology that significantly reduces natural sound leakage, these headphones are IP55 certified to repel sweat, dust and moisture, from workouts to wicked weather. Enjoy six hours of continuous music and calls on a single charge while EQ presets boost bass and reduce vibration on the go. Dual noise canceling microphones exclude surrounding noise, effectively enhancing speech. Audrey says voice prompts guide users through power, pair, play and talk. AfterShokz bone-conduction technology allows you to enjoy your music and your surroundings. Bone Conduction is a natural part of the hearing process--sound travels through our eardrums and bones simultaneously. We've taken the concept to the next level through development of a suite of proprietary audio technologies and design Patents. The result is headphones that deliver unrivaled situational awareness and comfort. How It Works Transducers guide mini vibrations through the cheekbones to the inner ears, delivering sound without plugging or covering them. You hear your music like never before. (Don't worry, only you'll be able to hear it.) and you'll also be able to hear more of the sounds around you (think cars and people calling for you).