The cutting edge Revo Black collection's Sonic series expands with a new sporty subtle wrap frame. Immerse yourself in sight and sound while tracking your health and fitness. Equipped with state of the art RevoWhisper™ technology that cancels out ambient noise while enhancing your speech and our industry-leading Light Management System™, the Sonic 2 frame allows you to listen to music, take calls on the go and track your health with the Revo app (optional add-on) all while enjoying the Best Lens on Earth. Directional stereo speakers also allow you to enjoy music on the move without interruption. Sonic 2's unrivaled battery life gives you 11 hours’ worth of nonstop music or 8 hours of phone calls. This lightweight frame features easy magnetic charging- perfect for people on the go; temples with retainer cord capability, and adjustable end tips that can straighten or bend for optimal comfort.