27-inch iMac with Retina 5K display• 27-inch (diagonal) 16:9 widescreen LED-backlit Retina 5K display; 5120 by 2880 pixels • 3.1GHz 6-core Intel Core i5 with 12MB shared L3 cache (Turbo Boost up to 4.5GHz) • 8GB of 2666MHz DDR4 memory ( supports up to 128GB ) • 256GB SSD • Radeon Pro 5300 with 4GB of VRAM • FaceTime HD camera* • Two Thunderbolt 3 (USB-C) ports; support for high-speed I/0 and video out • SDXC card slot and four USB-A ports • 10/100/1000BASE-T Ethernet • Built-in stereo speakers, microphone, headphone jack • 802.11ac Wi-Fi and Bluetooth 5.0 • Apple Magic Keyboard and Apple Magic Mouse 2 • Preinstalled macOS

The iMac is sealed in its box and has never been opened.