Processor
Apple A9 (Dual-core 1.84 GHz Twister)
Screen
Retina HD display with 3D touch, 5.5-inch (diagonal) widescreen Multi-Touch display, 1920-by-1080-pixel resolution at 401 ppi, 1300:1 contrast ratio (typical), 500 cd/m2 max brightness, Fingerprint-resistant oleophobic coating on front
iSight Camera
12 megapixels iSight camera with 1.22µ pixels, ƒ/2.2 aperture, Live photo,, Sapphaire crystal lens cover, Optical image stabilization, True Tone flash, Backside illumination sensor, Five-element lens, Hybrid IR filter, Autofocus, Tap to focus, Burst mode, Face detection, Panorama,Photo geotagging
Video Recording
4k video (3840 by 2160) at 30fps, 1080p HD video recording, 30 fps or 60 fps, 720p HD video recording at 30 fps, True Tone light, Slo-mo video (120 fps), Time-lapse video, Video Image stabilization, Take 8MP still photo while recording 4K video, Face detection, 3x zoom, Video geotagging
Facetime Camera
5 MP photos, 720p HD video recording, Backside illumination sensor, Retina Flash
Storage Size
16 GB
Battery
Built-in rechargeable lithium-ion battery, Talk time: Up to 24 hours on 3G. Standby time: Up to 16 days, Internet use: Up to 12 hours on 3G, up to 12 hours on LTE, up to 12 hours on Wi-Fi,