Keychron K2 Ultra 8K Wireless Custom Mechanical Keyboard
Keychron K2 Ultra 8K Wireless Custom Mechanical Keyboard - Fully Assembled / Black / Keychron Apex Switch - Red is backordered and will ship as soon as it is back in stock.
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Keychron K2 Ultra 8K is a wireless custom mechanical keyboard designed for performance and flexibility. It supports 2.4 GHz wireless, Bluetooth, and wired connectivity. With its compact 75% layout, you can fully customize every key and create macros through the Keychron Launcher web app. Powered by ZMK firmware, it delivers an 8K polling rate in 2.4 GHz wireless mode while offering up to 760 hours of battery life. It also comes with keycaps for both Windows and macOS, and features hot-swappable support, making personalization quick and easy.
KEYCHRON K2 ULTRA 8K
The K2 Ultra 8K is a wireless mechanical keyboard with a sleek 75% layout. It delivers an ultra-responsive experience with an 8000 Hz polling rate in both wired and wireless modes. Supporting Bluetooth, wired, and ultra-low-latency 2.4 GHz connectivity, it adapts seamlessly to any setup. Powered by the open-source ZMK firmware, it unlocks endless customization possibilities while delivering up to 760 hours (8K, backlit off) of battery life for enhanced performance in both work and gaming.
COLOR
Minimalist Style
Precision
Tri-Mode Connectivity
Learn how to switch your keyboard to 8000 Hz polling rate
Precision
Tri-Mode Connectivity
Learn how to switch your keyboard to 8000 Hz polling rate
Precision
Tri-Mode Connectivity
Learn how to switch your keyboard to 8000 Hz polling rate
Worry-Free Power
Up to 760-Hour Wireless Endurance
Powered by a 4000 mAh battery, along with optimized firmware and an enhanced circuit design, the K2 Ultra 8K delivers up to 760 hours of usage at an 8000 Hz polling rate ( backlit off ). Redefining what wireless performance can achieve.
Powerful ARM Core
An Epic Core Inside
Inside the K2 Ultra 8K lies a powerful MCU with 1 MB flash, delivering unmatched flexibility for deep customization and advanced functionality. It achieves an ultra-responsive 8K polling rate, ensuring every keystroke is registered with near-zero latency and exceptional accuracy for the most demanding gaming and professional tasks.
Layout
75% Compact Layout
The 75% compact layout features a space-saving design without compromising essential functionality. It’s a perfect fit for limited desk space and an ideal external keyboard for your laptop, streamlining your setup without the clutter. Whether you're typing long documents at work, coding at your desk, or gaming during your downtime, it delivers a comfortable balance of productivity, portability, and everyday usability.
Design
CNC-Machined Aluminum Frame
The frame is crafted from 6063 aluminum, a material known for its enhanced durability, stability, and premium feel. It is highly resistant to physical damage and wear, while remaining environmentally friendly and fully recyclable. These qualities deliver a balance of refined aesthetics and long-term sustainability.
Switch
Keychron Apex Switch
The K2 Ultra 8K comes with pre-lubed Keychron Apex Switches, crafted for gamers and typists who demand precision, durability, and a refined typing experience. The switch stem features a reinforced wall structure that enhances stability for smoother, wobble-free keystrokes and helps prevent dust and moisture from entering the switch housing for long-lasting performance.
Customize
Hot-swappable
Since everyone has unique typing preferences, the K2 Ultra 8K features a hot-swappable switch design, allowing you to easily swap any switches in seconds and customize your experience—no soldering required.
Keycaps
Double-Shot PBT Keycaps
Designed for a premium typing experience, the K2 Ultra 8K features double-shot PBT keycaps made from durable, non-shine-through PBT material. With excellent oil resistance, they are built to maintain a clean, refined look over the long term.
Customize
SUITABLE FOR ALL DEVICES
Seamlessly compatible with both macOS and Windows, the K2 Ultra 8K allows you to switch effortlessly between them with the included Mac and Windows keycaps, ensuring a consistent typing experience across devices.
Customize
Customize Every Part
To build a fully customizable keyboard, we designed every component to be easy to assemble, so you can customize and adjust each component to your preference.
Keycaps
The double-shot PBT keycaps provide excellent oil resistance while preventing the legends from fading over time.
Frame
The CNC-machined solid aluminum frame delivers a refined balance of precision, rigidity, and modern aesthetics.
Switches
Switches are the core mechanical components; different types (linear/tactile) offer unique feel and sound.
Plate
The steel plate in a keyboard secures switches in place, provides structural support, and influences typing feel and sound.
EVA Foam
By absorbing echo and noise, the EVA foam produces a cleaner typing sound.
IXPE Foam & PET Film
The IXPE foam reduces keystroke vibration and optimizes typing sound, while the PET film provides insulation and dust protection.
PCB
The circuit board registers keystrokes, and its hot-swappable design enables easy switch replacement.
EPDM Foam
The EPDM foam effectively dampens vibrations and minimizes hollow sounds, providing a softer, more cushioned typing experience.
Bottom Case PET Film
The bottom case PET Film insulates from shorts, shields internals from dust and scratches, and provides minor dampening.
Silicone Bottom Pad
This silicone pad helps reduce vibration and noise and provides a cushioned typing feel.
Bottom Case
A solid, premium ABS bottom case for a quieter, vibration-free typing experience.
LAUNCHER WEB APP
Program with ZMK & Launcher
The open-source ZMK firmware means endless possibilities for key remapping, macros, shortcuts, and more. Now you can easily customize each key with the Keychron Launcher web app.
Backlight
Unlock Dynamic Backlit Control
Go beyond standard presets with 22+ RGB backlight settings — including a static white option. Our advanced lighting engine includes two powerful features to fuel your creativity: Per-key RGB and Mix RGB. You can further fine-tune and remap keys with ease, crafting your unique style with vivid, dynamic RGB control.
RGB Backlight
Per-key RGB
With Per-key RGB, every single key is a digital brushstroke. This feature lets you individually customize the color of each key, transforming your keyboard into a vibrant canvas.
Learn how to set Per-key RGB on Launcher
Customize
Mix RGB
With Mix RGB, you can split your keyboard into two custom lighting zones, each with unique effects. Design high-contrast combinations to make your entire setup pop with vibrant style.
Learn how to set Mix RGB on Launcher
Guide
What's in the Box?
Guide
Series Differences
K Ultra
K Max
K Pro
Precision
Specs
Up to 225 hours (8K, lowest RGB brightness)
Accessories
Frequently Bought Together
Black Transparent OSA Full Set Keycap Set
Keychron Silicone Palm Rest
Cherry Profile Double-Shot PBT Full Set Keycaps - Black on White - Bow
Keychron 2-in-1 Switch and Keycap Puller
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