The F-keys double up as various shortcuts and media keys, including web browser home, my computer, open email browser and open media player. F5-F8 double up as media keys, (back, forward, play/pause, stop).
Farther along we find volume down/up and mute functions as well as an open calculator shortcut. The final apparent Fn key is Prt SC, doubling up as a toggle between 6KRO and NKRO.
The numpad also keeps the aesthetic of the chrome rimmed key-caps while in the top right corner there is a row of large LED indicator bulbs for the various locks (num lock, caps lock, scroll lock and Windows Lock). To lock the Windows Key, press the Fn + Windows Key.
The Crome rim of the MK Retro is complimented by the large 'pillar' feet. Though not the most compact keyboard, it remains fairly small in its overall frame.
The underside throws up little to note, other than the pillar feet, of which, the rear two has a rotatable ring, allowing for angle adjustment.
The spill/dust proof design is thanks to its protective shell, in which the key caps feature a protective socket. Thus making it difficult for dust/liquid to penetrate the mechanical switches. Though not completely water proof, this design certainly looks like it will protect the keyboard from the odd workplace spillage. However, due to this design, I wasn't sure how to crack it open to have a look at the switch manufacturer. Despite stating that the MK Retro features 'blue clicky' switches, what we clearly find here are the less commonly used 'green' switches. As we do not know the manufacturer, we cannot be entirely sure of their specification, however, generally speaking, 'green' switches are very similar to 'Blue', in that they are tactile, clicky switches, but they have a higher actuation force. This could be down to the use of larger, heavier key-caps, or simply to provide a stiffer key press that is more typewriter-esque.