The K6 shrank the K2 into a 68-key, 65% board and went to Kickstarter in January 2020. Keychron kept dedicated arrow keys and a sensibly sized right Shift, added an inclined bottom frame, and fit the same 4000 mAh battery as the K2. It pairs with three devices over Bluetooth 5.1, runs wired over USB-C, and comes with Mac and Windows keycaps. Switches are where K6s differ most. Keychron sold soldered Gateron G Pro boards, LK optical boards, hot-swap boards with Gateron or Keychron Super switches, and non-backlit boards with Keychron's own switches. The hot-swap mechanical version takes MX-style switches, and Keychron confirms NovelKeys Creams fit it. The LK optical version doesn't take MX switches at all. Cases came in plastic or with aluminum bezels, keycaps are ABS, and there's no QMK or VIA support on the original K6. The K6 Pro and K6 HE are different boards.
Versions
Keychron sold the K6 with soldered Gateron G Pro switches, with LK optical switches, as a hot-swappable board with Gateron G Pro or Keychron Super switches, and as a non-backlit board with Keychron's own switches. White-backlit, RGB and aluminum-bezel versions run across those. The hot-swap mechanical board takes MX-style switches such as NovelKeys Creams, and the LK optical board doesn't. Each switch type has its own firmware file. The K6 Pro and K6 HE are different keyboards.
The ABS keycaps shine with use. The bigger trap is the switch type, since an LK optical K6 won't take the MX switches a buyer may plan to fit, and Keychron warns that loading another version's firmware can break the board.
New to used keyboards? How to check a used keyboard covers chatter, stabilizers, keycap shine and the rest in detail.
Buying guide
We'd buy the K6 titled hot-swappable at $45 with free shipping from a 100% seller, under the $56 median, because a hot-swap board lets you replace a bad switch in a minute. There are at least 44 for sale, nearly all used boards from US sellers asking $45–85 delivered; the few new and open-box cards ask $50–80, and Japan dealers want $168–240 for the same board. K6s came with soldered Gateron, LK optical and hot-swap switches, so believe hot-swap only when the title says it, and ask for a photo of one switch with its cap off, since an optical K6 won't take MX switches. Ask how many days a charge lasts with the backlight off (Keychron rates it at up to 240 hours) and for a keyboardtester.com video with every key pressed. Skip the zero-feedback sellers and the optical board whose title matches another seller's word for word.
$35.70est. delivered
The lowest delivered K6 at $36, a backlit board shown complete from a 100% seller. It names no switch and isn't titled tested, so ask which switch it has and for a typing test video.
Keychron K6 Wireless Mechanical Keyboard Backlight
$44.99delivered
Titled hot-swappable at $45 with free shipping from a 100% seller, under the $56 median. Ask for a photo of a switch lifted out to confirm it, since that's what lets you fix a chattering key in a minute.
Keychron K6 Hot-Swappable Wireless Keyboard
$56.00est. delivered
The only seller here titling a K6 fully tested, an RGB board at $56 delivered from a 99.4% seller. Ask how long a charge lasts with the backlight off, since a tested board can still have a tired battery.
Keychron K6 Wireless RGB Mechanical Keyboard - Fully Tested
Delivered prices include shipping as eBay quoted it to a US address on Oct 14, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Snapshot
Checked . Some may have sold.
Delivered prices include shipping as eBay quoted it to a US address on Oct 14, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Used$35.70est. delivered
$20.00 + $15.70 shipping
Buy It Now$20.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Good buy
Backlit board shown complete. No switch named.
Seller: equispi
100% positive
Used$44.99delivered
$44.99 · free shipping
Buy It Now$44.99
Good buy
Titled hot-swappable. Free shipping, no switch named.
Seller: jmcallister37
100% positive
Used$56.00est. delivered
$40.00 + $16.00 shipping
Buy It Now$40.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Good buy
RGB board titled fully tested. The seller lists two.
Seller: pnwelectr0nix
99.4% positive
Used$39.98est. delivered
$29.99 + $9.99 shipping
Buy It Now$29.99
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
RGB board with clicky Gateron G Pro Blue switches.
Seller: dfdamer71
100% positive
Used$59.05est. delivered
$40.00 + $19.05 shipping
Buy It Now$40.00
Our take
Aluminum frame, Gateron G Pro Brown. Stock product photo, so ask for real ones.
Seller: vintagescores
100% positive
Used$50.00delivered
$50.00 · free shipping
Buy It Now$50.00
Check the seller
Optical board with Brown switches, shown boxed. Same title as another seller's K6, and 94.1% feedback.
Seller: buddy3470
94.1% positive
Used$54.44est. delivered
$44.66 + $9.78 shipping
Buy It Now$44.66
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Check the seller
RGB board titled Mac layout. Seller has zero feedback.
Seller: acekreations
No feedback yet
Used$240.04est. delivered
$170.04 + $70.00 shipping
Buy It Now$170.04
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Priced high
Red switches, shown boxed, from Japan with $70 shipping. About 4.3 times the median.
Seller: totomo_japan_shop
98.3% positive
Prices change daily. The live eBay search shows everything listed now, including anything new since Oct 14, 2026.
See every listing on eBay ↗eBay searchKeychron · Gateron, Other MX-style switches
2019
$50–$80 typical ask
Keychron · Keychron K Pro
2022
$85–$110 typical ask
Keychron · Gateron, Optical + 1 more
2020
$50–$100 typical ask
Keychron · Keychron K Pro
2023
$120–$140 typical ask