Operating System: iOS 8 Type: Flash Memory Capacity: 16 GB contrast ratio: 800:1 brightness: 500 cd/m2 Chip: A8 chip with 64-bit architecture, M8 motion coprocessor Camera: 8MP camera Wireless: 802.11a/b/g/n/ac Wi-Fi, Bluetooth 4.1 wireless technology Input and Output: Lightning connector, Built-in speakerΜ, Microphone Power and Batter: Built-in rechargeable lithium-ion battery, Video playback time: Up to 8 hours