Sigma smart sunglasses offer AI voice control features to allow you to live a hands-free lifestyle. Call up your phone's virtual assistant to make or answer phone calls, play music from your favorite music app, get directions to where you are going, and receive weather and traffic updates. The open ear design immerses you in your music while simultaneously keeps you intact with the physical world. Sigma glasses offer 100% UV protected and polarized lenses while sporting a classic silhouette. Choose from three sleek colorways: Panther, Cheetah, or Jaguar. Compatible with all Android and iOS devices via a fast and stable connection through Bluetooth from up to 30ft away.