Display: 5.5-inch Retina HD display with True Tone Processor: Apple A11 Bionic chip Storage: 64GB or 256GB options Rear Dual Cameras: Dual 12-megapixel cameras with optical image stabilization, Portrait mode, and 4K video recording Front Camera: 7-megapixel FaceTime HD camera with Retina Flash Battery Life: Up to 21 hours of talk time on 3G Wireless Charging: Supports Qi wireless charging Water and Dust Resistance: Rated IP67 (splash, water, and dust resistant) Operating System: iOS (at the time of release, upgradable to the latest iOS version) Colors: Available in Space Gray, Silver, and Gold.