The RK ROYAL KLUDGE F68 foldable mechanical keyboard is a delightful device. It’s a Bluetooth keyboard or usb-c wired keyboard. The USB-C socket acting as the power source to charge the internal battery. The keys are nice and tactile, with about 5mm of travel on the way down. The top plate of the keyboard is metal; and when folded out on a hard surface the keyboard is nice and rigid – though it doesn’t have a lock to hold it out flat if you are using it on your lap. The base of the keyboard is a soft plastic with some rubber feet for more aggressive use. The materials in the build are reflected in the dense feeling 850g weight. If you choose to use Bluetooth; you can pair 3 devices and switch between them using a fn key combination; this makes it easy to switch between my laptop and my iPad. The only other thing that would make it better are some feet to adjust the angle.The keys are full size, the keyboard is compact for travel thanks to the folding mechanism and the lack of numeric pad. Typing on the keyboard is great; they keys have a nice even resistance and stop with a good click. If you like classical style keyboards over laptop keyboards this is a great choice for carrying one around with you (there is even a velour effect carrying bag to protect it a great keyboard for crashing out documents, as well as playing games. The keyboard is backlit, you can control the brightness and switch between a constant illumination and a flashing mode with a Fn key shortcuts. That extended function also lets you flip the keyboard between windows and mac modes; the mac mode also working well when you fold out the tablet holder and connect the keyboard to an iPad. They have overloaded a little on the keyboard combinations; you can ctrl access F keys on the numeric keys; if you include the fn key you get media shortcuts like ctrl -fn -1 and 2 change the brightness. The Ctrl-FN combination is sticky though so when you engage It the multimedia keys stay running.There is a control app for windows that lets you record macros to improve your gaming experience.I love the compact size and the folding design; it makes it fit much easier into my work day-bag and improves my travel keyboard experience for the sake of about a kilo of weight.