RK ROYAL KLUDGERKS70 Ergonomic Split Keyboard, Wireless Gaming Keyboard with Bluetooth/2.4G/Wired, 75% RGB Hot Swappable Mechanical Keyboards Fixed Wrist Rest for Win/Mac, Black

This was my second mechanical keyboard, and first ergonomic/split form factor. I was really excited to order this keyboard. I sat on the fence for about a year before finally taking the plunge. That being said, I'm happy that I did so!PRO:- Keyboard is heavy and solid. Doesn't feel like it will slide around.- Key travel is responsive, quiet and reliable.-Four 'legs' per section. You can have it lay flat or angled to your liking. Similar to traditional ergonomic keyboards.-Battery life is phenomenal.-Set up is plug and play. No need for drivers.-Bluetooth and 2.4 functionality is reliable. Keyboard works while charging.-Sections spread apart help my posture and shoulder blade pain.-Software allows for remapping of Macro keys (m1, m2, etc.)CONS:-You have to hunt around for the manufacturer-provided software for remapping keys and light control. I found a reddit post that gave me the correct information.-Limited backlight color and patterns.-The Macro keys on the left take some getting used to.-There is a learning curve.

I love these keyboards, including the aesthetics, comfort and functionality.It has some annoyances that took me a while to figure out. The tilde / back quote key is in a very unusual position.You can swap the caps and remap the keys using their software. However, this software only works on Windows PCs and is very difficult to find on their website for download.The good side is the remapping keys is permanent and you don’t need to be on Windows / use their software anymore.Another downside is that the coiled cable that connect the split keyboard sides uses an unusual and proprietary wiring, even though it has a USB-C connector. I tried switching to several USB-C cables, it just won’t work.But good split keyboards are hard to find, and the build quality is solid, so giving 4 stars.

I'm so happy I decided to buy this keyboard. Many of the split keyboards I have researched seem to have a steep learning curve, a layout that is far too different from what I am accustomed to, and they come with too hefty of a price tag for me to take a leap of faith on them.I figured if I didn't like this keyboard's split configuration, I could always just mush it back together for a more familiar feel anyway, and I greatly appreciate the flexibility, especially if someone else needs to use the computer it is connected to and doesn't want to use the split keyboard style.Pros:- feels well built. Mechanical keyboard.- multiple ways to connect to your computer (2.4 ghz and bluetooth, mac and windows modes)- hot swappable keys- tenting support allows for a more natural wrist position, and this was the biggest deal for me.cons- to control volume or use the media keys, I found that you have to use fn + left control to lock the first row as F keys, then you can use fn + the designated key for whichever media function you wish to use... pretty clunky.- the M1-M5 keys cannot be reprogrammed as far as I can tell- I can't find any software for the keyboard either.- since the keyboard relies so much on special function keys, other keycaps are out of the question for me.Everything considered this is a great keyboard and the pros greatly outweigh the cons. I'm very happy with my purchase.

The brown switches are nice, with a thunking sound. The keyboard works fine, and the split is also alright. Overall, the solid keyboard feels flimsy when detached into the split mode.There are some reviews on the app not working or not having enough options. The options are fine for someone who doesn't need to extensively mod the keyboard. I currently do not have any issues with the battery or the overall function of the keyboard.

First let me say that among split keyboards, where there is not a whole of lot choices, this keyboard is at a very good price/value point. It is not cheap, but half the price of higher end similar keyboards like Keychron and Cloud Nine. I have not used those and have no idea how they compare with the RK-S70 reviewed here.Here are some things I really like about this keyboard:1. The RK-S70 is hefty and feels very solid. And also seems high quality, however I have been using it for only a few days and cannot comment on the long term quality.2. The key switches are great and very comfortable for typing. In fact, this is probably the best experience I have had coming from a RedDragon mechanical keyboard.3. Once the two halves are positioned at a suitable distance and wrist angle, the usage makes it very comfortable for long hours of use and would probably give health benefits if you spend long hours every day at your desk using a keyboard. Of course, it takes a bit of getting used to for typing on two separate halves with each hand and not crossing over to hit some of the middle keys, but that is true of any split keyboard and practice will make the transition seamless.Now, to some of the pain points that make this a deal breaker for me. Some of these may not apply to everyone based on their usage.1. Cross platform usage on Linux/Mac/Windows is not easy. I have not tried mapping the keys on Windows or Mac, but there is no software support for Linux. However, I wouldn't mind it so much if it just worked smoothly on all the platforms without some finessing as mentioned below.2. The Macro keys (M1-M5) cannot be remapped and the M2 key is mapped to Ctrl-C and is right next to the Tab key. I use Tab a lot on Linux for auto completion and end up hitting M2 very frequently which kills the commands I am trying to type. This has happened too many times, especially with long commands, that this is one of the top reasons for me that makes it unusable.3. I use a 4 way USB switch between 3 computers to share my keyboard, mouse, microphone, webcam toggling between work and personal computers while also switching between Mac and Linux. I am using hard wired option as the 2.4Ghz option has not worked for me, not sure if it is defective in my unit. The hard wired option is not working with my Macbook pro so I have to use bluetooth to connect to it. Switching from Mac to my Linux desktop with my USB switch, this keyboard does not reconnect unlike all the other peripherals and previous keyboard. I have to turn the bluetooth switch on the keyboard off to reconnect to the Linux desktop and then back on to connect with Mac. This behavior is not consistent as it did work without doing so for a couple of days. But this behavior and inconsistent connection is making it really hard for me to accept this keyboard.3. Lack of dedicated function keys is also not ideal, but I can live with it. You can toggle the number keys (top row) to function keys with a key combination (Fn+left Ctrl). I mostly only use the multimedia function keys to control volume, but once toggled, have to remember to toggle it back before using the number keys. This is just a pain and not something I would like to deal with if I am spending $100+ on a keyboard.4. Another minor hindrance is the ~ key is at the opposite end, at top right instead of on the left next to '1' key on a standard keyboard. This key may not be very useful for many people but for me it is important as ~ and ` both are very useful in CLI on Linux and Mac. So I thought it worth mentioning. I suppose with practice, one can get used to it.5. The CMD key (or the Windows key) does not work on Mac OS even after switching to Mac mode with Fn + s as described in the manual. Again, not sure if this is a defect with my piece or due to my particular setup.6. Documentation is poor, both the manual and on the website. You would think, if the company is selling an expensive piece of equipment like this globally, the least they can do is publish good documentation in English. Seriously, how much additional one time cost is that. I would offer my services if they are interested :)So I think for people whose usage is more simpler than mine, like with a single computer setup running either Windows or Mac, this may be a good keyboard. The feel and typing is really superior and could relieve a lot of physical stress over many hours of use. I really wanted this to work for me, but sadly I will be returning for the above mentioned reasons but YMMV.