BLU Studio 5.3-Inch Display, Dual SIM, Android 2.3 Gingerbread, 800Mhz Processor, 3G HSDPA, 2500 mAh Battery, WIFI - US Warranty - Black GSM Quadband (850/900/1800/1900), Unlocked Android 3G HSDPA 850/1900 Android 2.3 Gingerbread, 3G 7.2 Mbps, 512 MB ROM, Micro SD up to 32GB 800 MHz Processor, 2500 mAh Battery, Wi-Fi, 5.3" High Resolution Multi-Touch Capacitive Touchscreen 5.0MP Camera, VGA Front Camera, Video Calling, Push Mail, Micro SD Slot up to 32GB Built-in Social Apps: Facebook, Twitter, Yahoo, Whatsapp