The Nokia Lumia 510 is based on the current Windows 7.5 platform, upgradeable to Window 7.8 which brings great new functionality and experiences to the existing platform. It is currently available in black, white and red. Product specifications: Nokia Lumia 510 Operating System Windows Phone 7.5Display 4-inch WVGA 800x480TFTCapacitive Touch Screen Battery 1300 mAh Processor Snapdragon™ S1Main camera 5MP Autofocus Memory 256MB RAM4GB mass memory (no memory card slot)7GB free SkyDrive storage