Keychron - K3 V3 QMK Wireless Mechanical Keyboard
Keychron - K3 V3 QMK Wireless Mechanical Keyboard
Keychron - K3 V3 QMK Wireless Mechanical Keyboard

Keychron

Keychron - K3 V3 QMK Wireless Mechanical Keyboard

£95.00
Version
Version: White Backlight
Choose Switches
Choose Switches: Red
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Product details

Keychron K3 QMK Wireless Mechanical Keyboard V3

Keychron K3 QMK Wireless Mechanical Keyboard V3

Ultra-Slim Meets Fully Programmable

A clean desk can change your whole mindset. A versatile keyboard can change your whole workflow. Meet the Keychron K3 V3: an ultra-slim, low-profile design for professionals who create, code, and connect across multiple devices without sacrificing the feel of a true mechanical keyboard.

For years, the choice has been a frustrating one. You could have a thin, portable keyboard that was easy to travel with, or you could have a fully programmable mechanical keyboard with a satisfying typing experience. Getting both felt impossible. The Keychron K3 V3 ends that trade-off. It delivers the complete enthusiast feature set in a package built around innovative low-profile switches that are 33% slimmer than conventional designs. The result is a keyboard that fits into any setup, from a minimalist home office to a backpack on the go.

Ultra-Slim Design

Full Control, No Compromises

We covered the slim design. Now, for the control. At the heart of the K3 is open-source QMK firmware, giving you the power to tune your workflow with precision. Remap any key, build complex macros for repetitive tasks, create custom function layers for different applications, and much more.

Historically, getting this level of control on a wireless keyboard was a challenge. While many wireless boards claim to work with powerful firmware, the experience can be inconsistent. Keychron's implementation is different. You can configure everything through the simple Keychron Launcher web app, which works on macOS, Windows, and Linux. The K3 is built to give you deep programmability that just works, whether you're plugged in or connecting over Bluetooth.

QMK Programmability
Keychron K3 V3 Full View

Connect to Your Entire Workflow

The modern workspace isn't confined to one screen. The K3 is built for it. It connects wirelessly with up to three devices at once using a stable Broadcom Bluetooth 5.2 chip. Switch effortlessly between your laptop, tablet, and phone with a simple key combination.

It's fully compatible with both macOS and Windows. A dedicated switch on the back toggles between layouts, and the box includes extra keycaps for both operating systems, so the multimedia and function keys work exactly as you expect them to. Plugged in, the keyboard offers a 1000 Hz polling rate for high-speed response. It's a single keyboard designed to be the hub for all your devices.

Multi-Device Connectivity

A Refined Typing Experience

A keyboard's performance is about more than just its software. The K3's typing feel and sound have been carefully refined. Inside the slim aluminum and ABS case, a complete acoustic foam package—including layers of IXPE, EPDM, and latex foam—absorbs harsh frequencies. This creates a quieter, more solid, and responsive sound with every keystroke.

The board is available in a hot-swappable version, allowing you to change every switch without touching a soldering iron. This lets you experiment with different feels, from smooth linear to tactile bump, using any Keychron or Gateron low-profile 2.0 mechanical switches. Combined with redesigned stabilizers that reduce wobble on larger keys, the K3 delivers a stable and satisfying feel that defies its ultra-slim profile.

Premium Components
K3 V3 angle view K3 V3 red switch variant

Features at a Glance

Build Quality

Ultra-Slim Profile. One of the world's thinnest mechanical keyboards, with low-profile switches that are 33% slimmer than traditional switches.

Hot-Swappable Switches. The hot-swap option lets you change every low-profile switch in minutes, no soldering required.

Premium Acoustic Foam. A multi-layer foam insert dampens sound for a quieter, more refined typing experience.

Connectivity and Software

QMK/VIA Programmability. Remap keys, create macros, and customize your layout with powerful, open-source firmware.

Dual-Mode Connectivity. Connect with Bluetooth 5.2 to three devices simultaneously or use a wired USB-C connection with a 1000 Hz polling rate.

Mac & Windows Compatibility. A dedicated toggle switch and included keycaps provide a seamless experience on any operating system.

Frequently Asked Questions

What's new in Version 3?

The biggest upgrade is the addition of QMK/VIA support, which provides a much deeper level of programmability than previous versions. This version also includes an enhanced acoustic foam package for improved sound and feel.

What switches are compatible with the hot-swappable board?

The hot-swap sockets are designed specifically for Keychron and Gateron low-profile 2.0 mechanical switches. They are not compatible with normal profile MX switches or low-profile optical switches.

Is this keyboard good for gaming?

Yes. In wired mode, the K3 has a 1000 Hz polling rate, which is the standard for gaming keyboards and ensures a low-latency connection. It also features N-Key Rollover (NKRO) in wired mode, so every keypress is registered.

How do I program the keyboard with QMK/VIA?

You can configure your K3 using the Keychron Launcher web app. It provides an intuitive interface for remapping keys, creating macros, and adjusting backlighting without needing to compile firmware yourself.

Got questions? 🤔

Do you have any questions, or unsure if this product is compatible with your setup?

Specifications

Layout: 75% (US ANSI layout)

Switch Type: Low-profile mechanical switches (Keychron Low Profile 2.0 or equivalent)

Connectivity: Wired USB-C + Bluetooth 5.2

Firmware: QMK support & Keychron Launcher for remapping

Typing Angles: 2.5°, 4.2°, 6.5°

Mounting / Build: Ultra-slim chassis with refined acoustic foam

Inclusion: Keyboard (switches & keycaps depend on chosen variant)

Inside the box

1 × Keychron K3 Version 3 Keyboard (select variant)
Includes: USB‐C cable; additional Mac/Windows keycaps; user manual

Compatibility

Compatible with Windows, macOS, and Linux

Supported by Keychron Launcher web app (no download required)

Hot-swappable variant supports low-profile switches in specific models

Warranty

1-year manufacturer’s warranty