CATERPILLAR CAT B15 IP67 Ultra Rugged Black Factory Unlocked DUAL SIM Cell Phone (2G 850/900/1800/1900 & 3G 900/2100) System: Android 4.1 Jelly Bean; SIM Type: Dual SIM: mini-SIM (2FF) Processor: 1 GHz / Dual Core; Camera: 5 Mpixels / Video: Yes / Front: Yes Memory: Internal: 4 GB / RAM: 512 MB / Slot type: microSD / Max. slot capacity: 32 GB Display: 4.0" / Wet Finger Tracking / Resolution: 800 x 480 pixels Network: 3G: 900/2100 MHz / GSM: 850/900/1800/1900 MHz