Bone conduction technology and OpenFit design delivers music through your cheekbones, ensuring ears remain completely open to ambient sounds for maximum situational awareness during long-term wear. The new, organic, wraparound design is 20% lighter than its counterpart to deliver a flexible fit for unnoticeable all-day comfort and stability. Bluetooth v4.2 connectivity and convenient multipoint pairing compatible with your iOS and Android Bluetooth-ready smartphones or tablets and Mac and PC computers and laptops.