The iPhone 8 uses an "aerospace-grade" aluminum alloy case reinforced by steel and has a glass front and back. It is splash, water, and dust-resistant (IP67), but not water-proof, and it has stereo speakers and a Lightning port. iPhone 8 models have a 4.7" (diagonal) widescreen multitouch "True Tone" LED-backlit 1334x750 native resolution "Retina HD" display (326 ppi, 625 cd/m2) and a taptic-engine powered solid state "click less" Home button. It has dual cameras -- a rear 12-megapixel 4K camera with optical image stabilization, a f/1.8 aperture, a 6-element lens and wide color capture -- as well as a front 7-megapixel "FaceTime HD" camera with support for 1080p video. The cameras support motion tracking and offer augmented reality support.