BLU WIN HD LTE - 5.0" Windows Smartphone -GSM Unlocked - White Unlocked Dual SIM Windows 8.1 smartphone 8GB Internal memory 1GB RAM Micro SD up to 32GB Snapdragon 410, 1.2GHz Quad Core Processor 8MP Autofocus Main Camera and 2MP frontal Camera with LED flash 4G LTE,(700/1700/2600),4G HSPA+ (850/1700/1900/2100). GSM Quad band: US compatibility Nationwide on all GSM Networks including AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk and others