Model Number XT8501 Overall Size 170×85×23mm Total Weight 380g Display 5-inch IPS high-definition screen, resolution 720*1280 Touch screen Corning Gorilla three generation industrial grade multi-touch capacitive screen Expansion Slot 1 sim card slot, 2 PSAM card slots, 1 MicroSD (TF) card slot Communication Interface High-speed USB2.0 device interface 3.5 mixed plug charging port Keyboard Scan key, function key Camera Rear 8 megapixel camera with flash, auto focus Flashlight Low-power LED lighting, emergency use GPS Built-in GPS global positioning system with an error range of ±5m CPU Quad-core 64-bit Coretex-A53, clocked at 1.3GHz Memory Capacity RAM：2GB ROM：16GB Operating System Android 7.0 Battery Capacity 4500mAh lithium polymer battery Standby Time Turn off wireless communication and other functions to standby for 320 hours Charging Time Less than 4.5 hours Operating Hours More than 12 hours (one full charge) Protection Level   IP65