Apple 27-inch iMac Core i5 (5th Gen) (8 GB DDR3/1 TB/Mac OS X Sierra/2 GB/27 Inch Screen/I Mac 27 Inch MK472HN/A)  (Silver, Black, 51.6 cm x 65 cm x 20.3 cm, 9.54 kg)

Retina 5K display 27-inch (diagonal) Retina 5K display with IPS technology; 5120x2880 resolution with support for millions of colours, 3.2GHz 3.2GHz quad-core Intel Core i5 (Turbo Boost up to 3.6GHz), 8GB (two 4GB) of 1867MHz DDR3 memory; four SO-DIMM slots, user accessible, AMD Radeon R9 M390 graphics processor with 2GB of GDDR5 memory, FaceTime HD camera Simultaneously supports full native resolution on the built-in display and up to two 4096x2160 external displays or one 5120x2880 dual-cable external display Support for extended desktop and video mirroring modes, Magic Keyboard The redesigned Magic Keyboard comes standard with your iMac. It’s wireless and rechargeable (so you won’t be replacing batteries), with an ultra-compact, edge-to-edge design that wastes no surface space. It has an improved scissor mechanism, optimised key travel and a lower profile that increase control and comfort. And it pairs immediately with your iMac straight out of the box. Magic Mouse 2 The new design of Magic Mouse 2 lets it glide more smoothly across your desk. And since it supports Multi-Touch, you can use simple gestures on its surface to do things such as swipe between web pages and scroll through documents. So if you prefer to use a wireless mouse but want some of the benefits of Multi-Touch, Magic Mouse 2 is a great choice. Magic Trackpad 2 If you prefer using a trackpad, Magic Trackpad 2 gives you the full range of Multi-Touch gestures and introduces Force Touch to the desktop. Sensors underneath the trackpad surface detect subtle differences in the amount of pressure you apply, bringing more functionality to your fingertips and enabling a deeper connection to your content. This new design, along with a lower profile, makes it even more comfortable to use. Wi‑Fi 802.11ac Wi‑Fi wireless networking IEEE 802.11a/b/g/n compatible Bluetooth Bluetooth 4.0 wireless technology