Keychron S1 is now available! What is the difference between Keychron S1 and Keychron K3 Pro and other low-profile keyboards?


Keychron, a keyboard brand, has updated its official Twitter page to announce the release of the Keychron S1.

This article discusses the differences between the newly released “S Series” and existing low-profile keyboards.

Kawamura top R

Representative of GreenEchoes Studio

Ryosuke Kawamura

He launched his own media as a site operator and web writer, and now plans and manages multiple corporate media. He often types heavily in his work, and in his search for greater efficiency, he became addicted to the keyboard swamp and established “GreenKeys”.


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What is Keychron S1?

Fully Customizable. Free to create.

Keychron Official Twitter

The tweet shows a low-profile mechanical keyboard with a wired connection, and it looks like a wired-only K3 Pro.

Fully customizable. The phrase “freely creative” suggests something more than key remapping in QMK/VIA…

Differences between Keychron S1 and Keychron K3 Pro

As you can see, the S1 and K3 Pro look almost identical.

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Keychron K3 Pro was solicited on Kickstarter.
(I naturally snapped it up…)

The 75% array and coloring are different, but everything is the same, including the use of the latest PBT low-profile keycaps.

The differences are compared based on the information on the official website.

S1K3 Pro
key layout75%.75%.
access methodUSB Type-CUSB Type-C
key switchGateron LowProfile MX MechanicalGateron LowProfile MX Mechanical
QMK /VIAsupportsupport
Body/FrameFull CNC machined aluminumABS + Aluminum frame
tilt0/6 degree0/6/9 degrees
Body size310.4 x 118.4 mm306 x 116 mm
Front Height7.8mm11mm
Rear Height13.7 mm15mm

The areas marked in red are the major differences from K3 Pro.

The weight of the different materials is probably the biggest difference, especially in terms of weight.

In terms of standing, the K3 Pro is the regular lineup, while the S1 is the “Q series” of thin mechanical keyboards.

Quietness may also be greatly improved.

Please see here.

keychrons1lowprofileqmkkeyboardexploding1 1667362670174 scaled

While the K3 Pro has a plastic body plus aluminum frame, the S1 has an all-metal body plus sound-absorbing material, probably silicone material.

The S1 is definitely superior in terms of key feel and quietness.

Keychron S1 Price

The Keychron S1 is priced as follows

  • Hot-swappable model: $129 (RGB backlight)
  • Non-hot-swappable model: $119 (RGB backlight)
  • Non-hot-swap model: $109 (white backlight)

As is the usual Keychron lineup, the RGB-backlit x hot-swappable model is the most expensive, and the white-backlit x non-hot-swappable model is the least expensive.

Personally, I do not find Gateron’s low-profile mechanical switches attractive except for the brown axis, so I feel that a non-hot-swappable model is fine.

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I would like to see a low profile mechanical switch with an early bump feel.

Summary|S1 is recommended for home use

This is a summary of information about Keycheon S1.

The fact that it weighs nearly one kilogram and is a wired connection-only model makes the S1 a good choice for those who dare to use a “low-profile keyboard” only at home.

However, although this is a matter of taste, low-profile switches are less varied than normal-profile switches, and the range of “enjoyment by changing switches,” which is the real appeal of low-profile switches, is very limited.

If you are looking for a low-profile switch with a good key feel, we recommend the K3 andK7 with Keychron Optical Switches.

Keychron K7 12

Please also see this video for the keystroke sound of low-profile switches.

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河村 亮介のアバター 河村 亮介 GreenKeys運営責任者/事業代表

WEBサイト運営事業GreenEchoes Studio代表をしています。他社法人メディアの運営ほかキーボードメディアや通信系メディアへの寄稿を行うなど、ウェブライターとしても活動しています。今年はオリジナルキーキャップセットを作る予定。