I have this exact model. Aluminium body very well made, the keycaps have a pleasant smooth rubber-y feel to the touch. Blows Apple's magic keyboard out of the water without breaking a sweat. It's a nice choice for people who just want to take it out of the box and use it. Not so much for those who like to tinker with it. Didn't hurt me at all while typing, but YMMV so you might want to put some silicone o-rings on the keycap stems. There are three things that IMO, if fixed, could make it so much better than what it is: Proprietary stabilized keycaps As opposed to pretty much every single other keyboard in the world, the stabilized keycaps' stems (space bar, shift, enter) are not aligned to each other, so you only can use Keychron's own keycaps. Light control is in the delete key position. Top right corner is prime keyboard real estate, why waste it like that? Why mess with years of muscle memory? Why? No software at all. I'm not even talking about QMK/ZMK/VIA, just any software to remap keys. Answer from Glittering-Effort-77 on reddit.com
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Keychron
keychron.com › home › keychron k3 ultra-slim wireless mechanical keyboard (version 2)
Keychron K3 Ultra-slim Wireless Mechanical Keyboard (Version 2)
Compact 75% Layout. Ultra-slim. Wireless Bluetooth 5.1 or Wired type-C mode. Users can hot swap every switch in seconds with the Optical switch hot-swappable version. Works with Mac, Windows, iOS, Android, Linux.
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Amazon
amazon.ca › Keychron-Ultra-Slim-Mechanical-Low-Profile-Compatible › dp › B08LSJ4RHH
Keychron K3 Version 2, 84 Keys Ultra-Slim Wireless Bluetooth/USB Wired Mechanical Keyboard with White LED Backlit, Low-Profile Gateron Mechanical Brown Switch Compatible with Mac Windows : Amazon.ca: Electronics
Keychron K3 Version 2, 84 Keys Ultra-Slim Wireless Bluetooth/USB Wired Mechanical Keyboard with White LED Backlit, Low-Profile Gateron Mechanical Brown Switch Compatible with Mac Windows : Amazon.ca: Electronics
Keychron K3 Version 2, 84 Keys Ultra-Slim Wireless Bluetooth/USB Wired Mechanical Keyboard with White LED Backlit, Low-Profile Gateron Mechanical Brown Switch Compatible with Mac Windows : Amazon.ca: Electronics
(4.4)
Price   $141.50
Discussions

has anyone had experience with the Keychron K3 ultra slim with optical switches?
I have this exact model. Aluminium body very well made, the keycaps have a pleasant smooth rubber-y feel to the touch. Blows Apple's magic keyboard out of the water without breaking a sweat. It's a nice choice for people who just want to take it out of the box and use it. Not so much for those who like to tinker with it. Didn't hurt me at all while typing, but YMMV so you might want to put some silicone o-rings on the keycap stems. There are three things that IMO, if fixed, could make it so much better than what it is: Proprietary stabilized keycaps As opposed to pretty much every single other keyboard in the world, the stabilized keycaps' stems (space bar, shift, enter) are not aligned to each other, so you only can use Keychron's own keycaps. Light control is in the delete key position. Top right corner is prime keyboard real estate, why waste it like that? Why mess with years of muscle memory? Why? No software at all. I'm not even talking about QMK/ZMK/VIA, just any software to remap keys. More on reddit.com
🌐 r/MechanicalKeyboards
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June 8, 2022
Keychron K3 Ultra Slim with low profile Gateron brown switches came in today.
I hope they add this one to the ISO collection at some point. More on reddit.com
🌐 r/MechanicalKeyboards
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140
June 22, 2020
Keycheron K3 Ultra slim (Brown switches)

Nice coaster too btw

More on reddit.com
🌐 r/MechanicalKeyboards
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25
September 21, 2017
Just got my new Keychron K3 Ultra Slim RGB Backlight Gateron Optical Switch Red

Did you order direct from them? Everytime I check for this it says Sold Out.

More on reddit.com
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March 5, 2020
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Reddit
reddit.com › r/mechanicalkeyboards › has anyone had experience with the keychron k3 ultra slim with optical switches?
r/MechanicalKeyboards on Reddit: has anyone had experience with the Keychron K3 ultra slim with optical switches?
June 8, 2022 -

I'm looking into buying this one with the brown optical switches. does anyone know if it's a good keyboard? does the ultra slimness hurt the typing experience?

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Keychron
keychron.com › home › keychron k3 qmk wireless mechanical keyboard (version 3)
Keychron K3 QMK Wireless Mechanical Keyboard (Version 3)
Keychron K3 Version 3 is an ultra-slim QMK wireless mechanical keyboard. It supports both Bluetooth and a wired connection. You can master keys or macro commands on its 75% compact layout through the Keychron Launcher web app.
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Keychron
keychron.com › home › low profile keyboard
Low Profile Keyboard – Keychron
Ultra-slim · Wireless · Wooden · Keychron K3 Max All-Wood · 75% Compact Slim · Lemokey P3 HE · 80% Compact · Keychron V1 8K · 75% Compact · Keychron Q6 Ultra 8K · 100% | Full Size · Keychron Q1 Ultra 8K · 75% Compact · Keychron Q3 Ultra 8K · 80% Compact ·
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Medium
medium.com › technology-hits › keychron-k3-ultra-slim-wireless-mechanical-keyboard-version-2-116c5ad1e57f
Keychron K3 Ultra-slim Wireless Mechanical Keyboard (Version 2) | by Edwin Garcés | Technology Hits | Medium
May 4, 2024 - You can buy it directly on the Keychron page, but at this moment it’s sold out, however, you have other options like Amazon, unfortunately, it just has Optical Switches options, even so, it is still a great choice.
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Keychron
keychron.com › home › ultra slim keyboards
Ultra Slim Keyboards – Keychron
Ultra-slim · Wireless · Wooden · Keychron K3 Max All-Wood · 75% Compact Slim · Lemokey P3 HE · 80% Compact · Keychron V1 8K · 75% Compact · Keychron Q6 Ultra 8K · 100% | Full Size · Keychron Q1 Ultra 8K · 75% Compact · Keychron Q3 Ultra 8K · 80% Compact ·
Find elsewhere
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GeekDad
geekdad.com › 2021 › 06 › click-clacking-away-on-the-keychron-k3-ultra-slim-wireless-mechanical-keyboard
Click-Clacking Away on the Keychron K3 Ultra-Slim Wireless Mechanical Keyboard – GeekDad
June 5, 2021 - The K3 has a lot of similar features to the K2, which GeekDad Mordechai reviewed a couple of years ago. It’s still an 84-key keyboard, with no number keypad; the arrow keys and home/end/page up/page down are squeezed onto the right side of ...
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YouTube
youtube.com › watch
I wish someone told me this sooner | Keychron K3 Ultra Slim - YouTube
The Keychron K3 Ultra Slim keyboard is a great place to start if you're looking to get into the mechanical keyboard scene and your budget allows.Want to supp...
Published   November 28, 2024
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YouTube
m.youtube.com › watch
Keychron K3 Review: The slimmest of the slim
Share your videos with friends, family, and the world
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YouTube
m.youtube.com › watch
Keychron K3 Ultra Slim Low-Profile Mechanical Keyboard ...
Share your videos with friends, family, and the world
Published   May 12, 2021
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YouTube
youtube.com › watch
Honest Review: Keychron K3 V3 Low Profile Mechanical Keyboard - YouTube
🤔 Keychron’s K3 V3 brings a sleek design and upgrades—but does it live up to the hype?👀 Buy Keychron K3 Version 3 (Affiliate Link): https://www.keychron.co...
Published   January 23, 2025
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iFixit
ifixit.com › Device › Keychron_K3_Ultra-slim_Wireless_Mechanical_Keyboard
Keychron K3 Ultra-slim Wireless Mechanical Keyboard Repair Help: Learn How to Fix It Yourself.
Repair guides, manuals, and troubleshooting help for Keychron K3 Ultra-slim Wireless Mechanical Keyboard. Get everything you need to repair your Keychron K3 Ultra-slim Wireless Mechanical Keyboard yourself.
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RTINGS
rtings.com › home › keyboard › reviews › keychron › k3 (version 2)
Keychron K3 (Version 2) Review - RTINGS.com
February 10, 2022 - The Keychron K3 (Version 2) is a compact 75% wireless keyboard that's light enough to carry around and use on the go. It's the upgraded version of the Keychron K...
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The Verge
theverge.com › tech › reviews
Keychron K3 wireless keyboard review: compact with compromises | The Verge
Keychron K3 (RGB)
Its latest model is the Keychron K3, which starts at $74. The K3 combines the low-profile design of the K1 with the compact 75 percent layout of the K2. The result is a keyboard with a slim and compact form factor, with a height that sits somewhere between a typical mechanical keyboard and ...
Rating: 7/10 ​
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Tom's Hardware
tomshardware.com › peripherals › keyboards
Keychron K3 Review: Slim, Customizable Style | Tom's Hardware
Keychron K3 Review: Slim, Customizable Style
Keyboards Keychron launches wireless Q Ultra keyboard series with up to 660 hours of battery life with 8K polling · Gaming Headsets Asus teams up with HiFiMan for planar magnetic ROG Kithara gaming headset ... When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Keychron's K3 ... Keychron's K3 Bluetooth/wired mechanical keyboard goes low-profile and offers a plethora of switch options. There's a lot to like, from looks to feel. Just keep a USB-C cable handy for charging.
Rating: 4 ​
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Kickstarter
kickstarter.com › projects › keytron › keychron-k3-ultra-slim-compact-wireless-mechanical-keyboard
Keychron K3 -Ultra-slim Compact Wireless Mechanical Keyboard by Keychron — Kickstarter
October 16, 2025 - Keychron is raising funds for Keychron K3 -Ultra-slim Compact Wireless Mechanical Keyboard on Kickstarter! Ultra-slim | Wireless or Wired | Hot-Swappable Option | Low Profile Gateron or Optical Switches | For Mac and Windows | 15+ RGB Backlit
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Keychron
keychron.com › home › keychron k3 pro qmk/via wireless custom mechanical keyboard
Keychron K3 Pro QMK/VIA Wireless Custom Mechanical Keyboard
Keychron K3 Pro low profile wireless custom mechanical keyboard. Compact 75% Layout. Ultra-slim. Wireless Bluetooth 5.1 or Wired mode. Supports QMK/VIA. Users can hotswap with any low-profile MX mechanical switch in a breeze.