verykool s4510 (Blue) - Unlocked Cell Phones - Retail Packaging - Blue The verykool s4510 Luna features the popular Android 4.4 KitKat operating system! The s4510 Luna can manage your work and personal phone lines keeping you organized! Your s4510 smartphone offers you with the entertainment that you deserve. Listen to your favorite radio stations and MP3 music, and record your preferred sounds. Also capture the images only you and your lifestyle can provide.