Apple weds high-res 4K visuals into its sleek, 5mm thin, mid 2017 21.5" iMac with Retina 4K Display. With a 4096 x 2304 screen resolution, this iMac provides 1 billion colors and 500 nits of brightness, which is 43% brighter than the previous model. The Retina 4K display also features a wider color gamut. Using a P3-based color gamut, the Retina 4K display provides a larger color space that more equally represents red, green, and blue, as compared to standard sRGB displays. And with more available colors, the images will appear more vivid and reveal greater detail, with more balance and precision.
This model has a 21.5" 4096x2304 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 4K" display (that runs "pixel doubled" to look like 2048x1152). The rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges.
Key Features
Incredibly thin, seamless aluminium enclosure
Revolutionary 21-inch 4K Retina model
Intel 7th Gen Core i5-7400 Quad-Core 3.0GHz CPU
Max turbo frequency: 3.5GHz
Cache: 6MB SmartCache
8GB or 16GB RAM
256GB, 512GB, 1TB, or 2TB SSD
Integrated audio with stereo speakers
AMD Radeon Pro 555 Graphics w/2GB VRAM
10/100/1000 Gigabit Ethernet LAN
802.11ac Wireless LAN
Bluetooth Wireless 4.2
SDXC card reader
Model : MNDY2LL/A
Mac OS
FaceTime HD camera and microphone
Kensington lock slot
21.5-inch LED-backlit Retina 4K display with IPS technology (4096 x 2304)