Caterpillar CAT B15 Dual Sim, 4GB, Factory Unlocked Dual Sim US Version 2G - GSM/GPRS/EDGE 850/900/1800/1900 MHz 3G - WCDMA/UMTS/HSPA: 850/1900 Display: 4" WVGA (480x800) Capacitive Wet Finger Tracking Main Camera: 5 MP, Front Camera: VGA