BLU Touchbook 8.0 3g - Unlocked - Black 8.0" HD Display (1280x800): 2MP Camera with LED Flash, HD recording (1080p), VGA Front Camera Android 4.4 Kit Kat Operating System, 8GB Internal Storage 1GB RAM with Micro SD Slot up to 64GB; MediaTek Quad-Core 1.3 GHz CPU, ARM MALI 400 GPU 3.5 mm Audio Jack, FM Radio, MP3 Player, MP4 Player, Bluetooth 4.0, Wi-Fi GSM Quad Band 4G HSPA+ (850/1700/1900): US Compatibility Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk and others 8.0" HD Display (1280x800): 2MP Camera with LED Flash, HD recording (720p), VGA Front Camera Android 4.4 Kit Kat Operating System, 8GB Internal Storage 1GB RAM with Micro SD Slot up to 64GB; 1.3 GHz Quad-Core CPU, ARM MALI 400 GPU 3.5 mm Audio Jack, FM Radio, MP3 Player, MP4 Player, Bluetooth 4.0, Wi-Fi GSM Quad Band 4G HSPA+ (850/1700/1900): US Compatibility Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk and others Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.