AfterShokz Trekz Titanium Open Ear Wireless Bone Conduction Headphones, Slate Grey, (AS600SG) BONE CONDUCTION TECHNOLOGY - Our bone conduction technology and OpenFit design delivers music through your cheekbones, ensuring your ears remain completely open to ambient sounds for maximum situational awareness during long-term wear. BLUETOOTH CONNECTIVITY - Modern wireless headphones with Bluetooth v4.1 connectivity and convenient multipoint pairing compatible with your iOS and Android Bluetooth-ready smartphones or tablets and Mac and PC computers and laptops. DESIGNED FOR LONG WEAR - Trekz Titanium wraparound headbands are lightweight and flexible to ensure comfort during extended wear. Combined with a long battery life, this compact fit allows you to enjoy continuous music and calls for six hours at a time. QUALITY SOUND - Innovative AfterShokz headphones deliver a premium audio experience. With PremiumPitch technologys wide dynamic range and rich bass, and LeakSlayer technology to reduce natural sound leakage, you are ensured the best on-the-go audio. ULTIMATE DURABILITY - Our IP55 certified sport headphones repel sweat, dust and moisture throughout your indoor or outdoor exercise routine. These sturdy workout headphones withstand your strenuous running, cycling, and more! EQ presets reduce vibration.