The K8 is the tenkeyless board in Keychron's original K-series, on sale from 2020. It keeps the function row and the navigation cluster, drops the numpad, and brings the K2's wireless setup to a full TKL layout, with Bluetooth 5.1 to three devices, a USB-C wired mode, a 4000 mAh battery and keycaps for both Mac and Windows. Switch options ran wide. You'll find soldered Gateron G Pro boards, hot-swap mechanical boards with Gateron or Keychron Super switches, and hot-swap optical boards with Gateron Optical or Keychron Optical switches, which take only optical replacements. Stock keycaps are double-shot ABS, and the case is plastic or plastic with an aluminum frame. Keychron also made it in UK, German and Nordic ISO and in Japanese JIS, and the K8 is one of three Keychrons it lists as certified for Japan. Version 2 arrived in late 2024 with QMK, Bluetooth 5.2 and PBT keycaps.
Versions
The original K8 came with soldered Gateron G Pro switches, as a hot-swap board with Gateron or Keychron Super mechanical switches that takes most 3- and 5-pin MX switches, and as a hot-swap optical board with Gateron Optical or Keychron Optical switches that takes only optical switches. Non-backlit boards used Keychron's own switches. Each has its own firmware file. ISO (UK, German, Nordic) and Japanese JIS versions exist. Version 2 (late 2024) adds QMK, Bluetooth 5.2 and PBT keycaps. The K8 Pro, K8 Max and K8 HE are different boards.
The ABS keycaps go shiny with use. Optical and mechanical K8s look alike but take different switches and different firmware, and Keychron warns that flashing the wrong file 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 K8 titled hot-swappable at $40 with free shipping from a 100% seller, because a hot-swap board turns a chattering switch into a one-minute fix. There are at least 80 for sale and most ask $50–100 delivered, with US used boards mostly at $36–65 and Japan dealers at $142–190, some of them JIS boards with Japanese legends. K8s came soldered, hot-swap mechanical, and hot-swap optical that takes only optical switches, so ask for a photo of one switch pulled to see which you're getting. Ask how many days a charge lasts with the backlight off (Keychron rates it up to 240 hours), for a keyboardtester.com video with every key, and for a look at the space bar under light, since the ABS caps go shiny. Skip the $37 listing whose photo shows a K3 box, and bid on the auction only up to about $40, where fixed-price boards start.
$35.93est. delivered
A no-bid auction at $36 delivered right now, with Gateron G Pro Brown switches as titled and aftermarket caps in the photo. We'd stop at about $40, since fixed-price K8s start there.
Keychron K8 TKL Mechanical Keyboard, Gateron G Pro Brown
$40.00delivered
Titled hot-swappable and preowned at $40 with free shipping from a 100% seller, well under the $50–100 band. Ask for a photo of a pulled switch to confirm it's mechanical, not optical, and how long a charge lasts.
KEYCHRON K8 WIRELESS MECHANICAL KEYBOARD HotSwappable Preowned
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$35.93est. delivered
$25.00 + $10.93 shipping
Auction · no bids yet · ends in 21h 13m
Good buy
No-bid auction, G Pro Brown. Photo shows aftermarket caps.
Seller: oaktreepcs
100% positive
Used$40.00delivered
$40.00 · free 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
Titled hot-swappable, preowned. Free shipping.
Seller: jobay-1962
100% positive
Used$38.99delivered
$38.99 · free shipping
Buy It Now$38.99
Our take
K8L2 with brown switches. Free shipping.
Seller: paymore_copperfield
99.4% positive
Used$58.55est. delivered
$45.00 + $13.55 shipping
Buy It Now$45.00
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.
Our take
Photo shows a keycap puller and spare caps.
Seller: floppy-johnson
100% positive
Used$62.65est. delivered
$49.95 + $12.70 shipping
Buy It Now$49.95
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
K8E3, titled used with box. Photo shows the manual and spare caps.
Seller: whiteliontreasures2015
99.9% positive
Used$37.09est. delivered
$30.00 + $7.09 shipping
Buy It Now$30.00
Check the seller
Photo shows a Keychron K3 box, not a K8. Ask for a photo of the board itself.
Seller: shadow.wolf979
100% positive
Used$56.89est. delivered
$44.00 + $12.89 shipping
Buy It Now$44.00
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.
Check the seller
K8-A3 with Gateron Brown. Seller not shown, so check feedback on the item page.
Seller: Seller on eBay
Check feedback on the listing
Used$189.63est. delivered
$154.63 + $35.00 shipping
Buy It Now$154.63
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
Bare title, box photo only. $35 shipping from Japan.
Seller: toru_0000
98.3% positive
Prices change daily. The live eBay search shows everything listed now, including anything new since Oct 14, 2026.
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