Keychron K3 Pro Ultra-Slim 75% ISO-UK-Layout QMK/VIA Wireless Custom Mechanical Keyboard, Hot-swappable Program RGB Backlight with Low-Profile Gateron Red Switch for Mac Windows Linux

I wore out my trusty compact membrane Lenovo keyboard that I've used for years (keys are now sticking down and can't be fixed). I'd spent a couple of months looking at a variety of keyboards and got interested in mechanical switch keyboards. Then it got more difficult as there is so much choice and I eventually narrowed down the selection parameters: I wanted a row of function keys, I didn't want the numpad, I didn't want it being too noisy (so I chose red switches). The final parameter really narrowed the field - it had to be low profile, which in my mind narrowed the choice to two keyboards - the Keychron K3 or the Logitech MX Mechanical Mini. Watched loads of reviews of both - and then came across the Keychron K3 Pro - and that's the one I went with. I'm a 9 finger typist, and the action on this keyboard is so much better than any I've experienced before - very smooth and satisfying. The travel on the keys is greater than my other keyboards (all membrane). Yes it's more expensive than I'm used to, but I'm a professional programmer so it's one of the tools of my trade. Very happy with the purchase.

I would give it 4.5 stars if I could. The ease of setup with my MacBook was fantastic, I just connected via Bluetooth and it worked perfectly. I have had a lot of trouble with setting up mechanical keyboards with Mac in the past, but this is made for Mac so works out of the box with all the Mac keys installed.The keyboard feels reasonably premium and I like the fairly minimalist, less in-your-face aesthetic.It is a pleasure to type on. I went with the browns as I wanted to disturb my partner while typing less. But having had blues previously I just couldn’t forget how much nicer they were to type on, so I’ve ordered some replacement blue switches, which I had the option to do thanks to the hot swappable switches.The benefit of the low profile is that the keys are not as high so you can more comfortably type without a wrist rest. It also looks quite neat.So far the battery life seems good, I charged to 100% when I got it and haven’t needed to charge again after a week of daily usage which is perfectly good enough for me.DownsidesThe RGB lighting is not particularly bright. It is almost not visible in the day at all. This doesn’t bother me massively as I find rgb lighting to be one of those things that is cool for 2 weeks then you don’t really care about it. But if you want a keyboard that really shows off the rgb lighting then this probably isn’t the keyboard for you.I feel like a few key things are not explained in the manual, unless I somehow missed them. I did not see anything that detailed that fn+b shows battery level, and also there was nothing that explained how to remove/install the switches.The number one thing I don’t like about this keyboard is the caps lock. The design is just stupid. It shows caps lock on by lighting the caps text red. This has major flaws: as I stated previously the lighting is not super bright so it is not visible. Secondly, the keyboard is rgb so if the surrounding keys are red it would be literally impossible to tell if it’s on or not. And even if the surrounding keys are not red it’s still very difficult to tell. Now I don’t use the key at all to tell if caps locks is on, I just type. Maybe this won’t bother some people as much as it does me but it just seems like an obvious design flaw that could be easily avoided. Just have a separate (bright) white LED next to the caps text.The caps lock is the only thing that bothers me enough to mark down the keyboard, other than this I love how easy it was to setup with Mac.

The keyboard has a average build quality and materials.Backlight is terrible.The software issue makes it unable to do almost any customisation and I've seen this is a recurring problem with the k series.The support service is terrible and takes days to reply an email.Avoid the company and the product.

I'm really impressed with this keyboard. The low-profile design is comfortable for typing, and the 75% layout is perfect for my needs. The keys feel great, and the brown switches provide nice tactile feedback. Wireless connectivity is rock solid. My only minor gripe is that the included keycaps are a bit thin. I might replace them with something a bit more substantial down the road. But overall, this is a fantastic keyboard for the price.

The shine through is ridiculous, and I also prefer the ISO layout due to that working with both Mac and Windows so ended up returning this one. It also felt a bit crammed, although I've since come to get used to a similar layout.

Compact layout with all the functions and customisations. PBT keycaps enhance the typing experience.

Nice to type on

First review was rejected for some reason, so I will just say keyboard it nice, but there is no support whatsoever, I emailed them for some and they just sent a cryptic message back with no reference to what I had requested, i.e. ability to remap keys