Sony Ericsson Xperia arc S LT18a Unlocked Phone with Android, 8.1 MP Camera, 1.4 GHz Processor, and 4.2-Inch Display--U.S. Warranty (Silver) Networks: UMTS/HSPA 800/850/1900/2100 GSM/GPRS/EDGE 850/900/1800/1900. Android 2.3 (Gingerbread), 1.4 GHz processor, Internal phone storage: 1GB (up to 320MB free), RAM: 512MB, Memory card slot: microSD, up to 32GB Reality display with Mobile BRAVIA Engine. Touchscreen 854x480 pixels/4.2-Inch 16,777,216 colour TFT. Keyboard - Onscreen QWERTY Camera: 8.1 Megapixel, HD video recording (720p), Digital Zoom - up to 16x, 3D sweep panorama, Flash/light type - LED, Aperture - f/2.4 Connectivity: Synchronisation with computer, WiFi, HDMI support, Micro USB support, aGPS, Bluetooth technology, TV out, 3.5 mm audio jack, USB mass storage Includes charger, battery, microUSB cable, stereo headset, 8GB microSD card.