The iPhone 7 Plus has a 5.5" (diagonal) widescreen multitouch LED-backlit 1920x1080 native resolution "Retina HD" display (401 ppi, 625 cd/m2) and a taptic-engine powered solid state "clickless" Home button. The iPhone 7 Plus has three cameras: a dual rear 12-megapixel cameras (one wide-angle with an f/1.8 aperture and one telephoto with a f/2.8 aperture) that use software to emulate a 2x optical zoom as well as a 10x digital zoom. These rear cameras also provide optical image stabilisation, a 6-element lens, and wide colour capture. The front "FaceTime HD" camera is 7 megapixels and supports 1080p video capture. The iPhone 7 Plus uses an aluminium case and is splash, water, and dust-resistant (IP67), but not water-proof, and it has stereo speakers and a Lightning port. Internally, the iPhone 7 Plus is powered by a 64-bit "Apple A10 Fusion" processor with four cores -- two high performance cores and two high efficiency cores -- and has 3 GB of RAM. It also supports 802.11a/b/g/n/ac Wi-Fi with MIMO, Bluetooth 4.2, LTE (4G), and NFC for Apple Pay.