Keychron

Keychron K3 Ultra-Slim 75% Layout RGB Backlit Wireless Bluetooth/Wired USB Mechanical Keyboard, Hot Swappable Low-Profile Keychron Optical Red Switch 84 Keys Gaming Keyboard for Mac Windows-Version 2

Name: Keychron K3 Ultra-Slim 75% Layout RGB Backlit Wireless Bluetooth/Wired USB Mechanical Keyboard, Hot Swappable Low-Profile Keychron Optical Red Switch
Brand: Keychron
SKU: B08LR54Y1J

Status: Keychron K3 Ultra-Slim 75% Layout RGB Backlit…: Unavailable on Amazon as of 2026-10-07 04:19 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Keychron K3 Ultra-Slim 75% Layout RGB Backlit Wireless: Hot-swappable low-profile optical switches, no soldering needed; main trade-off: only 6KRO on wireless; full NKRO requires wired mode.

Unavailable on Amazon as of 2026-10-07 04:19 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: MageGee Portable 60% Mechanical Gaming Keyboard — $26.99 on Amazon as of 2026-10-07 12:15 UTC (price may vary).

View Current Price — $26.99

Similar: HK GAMING GK61 Mechanical Gaming Keyboard - 61… — $29.99 on Amazon as of 2026-10-07 20:15 UTC (price may vary).

View Current Price — $29.99

Similar: HK GAMING GK61s Mechanical Gaming Keyboard - 61… — $37.93 on Amazon as of 2026-10-07 08:15 UTC (price may vary).

View Current Price — $37.93

Original listing (currently unavailable) → Compare to similar gaming peripherals

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

Mike Perry — Hardware researcher since 2014. For keyboards, mice, headsets and other PC peripherals, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Hot-swappable low-profile optical switches, no soldering needed
✓ Bluetooth 5.1 pairs up to 3 devices plus USB-C wired mode
✓ Compact 75% layout with 84 keys saves desk space
✓ Optical Red switches rated for 70M keystrokes

Cons

✗ Only 6KRO on wireless; full NKRO requires wired mode
✗ Optical switches won't fit standard MX mechanical switches
✗ Plastic bottom frame under the aluminum top plate
✗ Linear Red switches lack tactile bump feedback

SpecPicks Verdict

SpecPicks scored Keychron K3 Ultra-Slim 75% Layout RGB Backlit Wireless… using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming peripherals category. Keychron's gaming peripherals lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming peripherals of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Keychron K3, a compact 75% layout 84 keys RGB backlight hot-swappable ultra-slim wireless mechanical keyboard built for peak productivity, a great tactile typing experience, and let you personalize per-key typing experience without soldering.
Be ready to multitask without missing a beat by connecting the K3 with up to 3 devices via the stable Bluetooth 5.1 chipset and switch between your laptop, PC, tablet and phone seamlessly. It also has wired mode with USB Type-C connection.
With a unique Mac layout, the K3 has all the necessary Mac multimedia keys while still being compatible with Windows. Extra keycaps for both Windows and Mac operating systems are included.
The redesigned low-profile Keychron optical switch is 40% slimmer than conventional switches with a shorter pre-travel and total travel distance that triggers an input and feedback faster than conventional/normal-profile mechanical switches. With the reinforced aluminum body (plastic bottom frame) make the K3 one of the thinnest and lightweight mechanical keyboards on the market. Comes with various RGB backlight settings, you can adjust the keyboard brightness to sync with your mood.
You can easily hot-swap every low-profile optical switch without soldering to customize your typing experience on the K3 (*This keyboard is NOT compatible with any conventional MX style mechanical switch). The pre-installed low-profile optical Red switch provides unrivaled linear responsiveness with up to 70 million keystroke lifespan, and it supports NKRO on the wired mode or 6KRO on the wireless mode.

Full Specifications

Brand	Keychron
Color	Low-Profile Keychron Optical Red Switch
Style	Contemporary
Theme	computing
Generation	1
Model Name	K3 Ultra-slim 75% Layout
Style Name	Contemporary
Unit Count	1 Count
Switch Type	Low Profile Gateron Mechanical, Low Profile Keychron Optical (Hot-swappable)
Connectivity	Bluetooth, USB
Model Number	K3E
Power Source	Battery Powered
Compatibility	PC, Switch, Mac
Number of Keys	84
Button Quantity	84
Connection Type	Wired
Keyboard Layout	QWERTY
Mfr Part Number	K3E1
Special Feature	Lightweight
Antenna Location	Gaming

Ready to buy?

Amazon shows no buyable offer for Keychron K3 Ultra-Slim 75% Layout RGB Backlit… at the last check. A similar in-stock product is MageGee Portable 60% Mechanical Gaming Keyboard. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $26.99