iPhone 7 dramatically improves the most important aspects of the iPhone experience. It is water-resistant, so you're protected against spills, splashes, and even dust. The Home button on iPhone 7 is an advanced solid-state button designed to be durable, responsive, and pressure sensitive. Working in tandem with the Taptic Engine, it gives you precise tactile feedback as you press. Using a highly advanced fingerprint sensor, Touch ID makes unlocking your iPhone 7 easy and secure. With Apple Pay, you can pay instantly and securely in stores, in apps, and on the web. And because your card details are never shared by Apple with merchants or stored on your device, using Apple Pay is the safer way to pay. iPhone 7 comes with optical image stabilization to reduce blur associated with motion and handshake. A large aperture further enhances the camera's ability to take superb low-light photos. Teamed with the six-element lens, the camera will deliver brighter, more detailed shots. The flash adjusts according to the color temperature of the environment, resulting in sharper, more brightly lit photos. The FaceTime HD camera is not only higher resolution, but it also uses wide color capture. So you can take sharper and more vibrant selfies. Worried about lighting? The Retina Flash matches the ambient light for a shot with natural-looking skin tones. With a wide color gamut, the Retina HD display is able to deliver cinema-standard colors. More shades of the color spectrum can be used to create an image, meaning that what you see on the screen is a truer representation of the world. With a four-core design, the A10 Fusion chip's CPU has two high-performance cores and two high-efficiency cores. The high-performance cores can run at up to 2x the speed of iPhone 6, while the high-efficiency cores are capable of running at just one-fifth the power of the high-performance cores. That means you get great performance and efficiency when you need it.