Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard

Ultra Series
KEYCHRON K3 ULTRA 8K
The K3 Ultra 8K is a low-profile wireless mechanical keyboard with a sleek 75% layout. Featuring a premium natural wood and metal frame, it delivers an ultra-fast 8K polling rate in both wired and wireless modes for exceptionally responsive performance. It supports Bluetooth, wired, and ultra-low-latency 2.4 GHz connectivity. Empowered by open-source ZMK firmware, the K3 Ultra 8K unlocks endless customize possibilities while delivering up to 550 hours of battery life for enhanced productivity in both work and gaming.

Paired with many other premium features, such as slim and portable design, double-shot PBT keycaps, 2.4 GHz, Bluetooth 5.2, and more, the Keychron K3 Ultra promises an unparalleled typing journey that transcends expectations.
COLOR
Color Styles


Precision
2.4 GHz & Bluetooth Connection


Worry-Free Power
550 Hours of Use on a Single Charge
Don't wait for a full charge—use it even while charging and enjoy uninterrupted performance with an impressive battery life of up to 550 hours (with the backlight off).

Customize
Wood Meets Metal
The K3 Ultra 8K combines the natural elegance of natural wood with a precision metal frame, creating a look that feels both refined and powerful. The contrast of warm wood texture and sleek metal craftsmanship delivers a premium balance of natural beauty and modern performance.

Elevated Typing Experience
Ultra-slim
Featuring an ultra-thin 11.9mm low-profile switch, the K3 Ultra achieves a sleek front edge profile of just 20.0mm, making this wooden-bodied device one of the thinnest wireless mechanical keyboards in the world while still delivering a distinguished tactile response.

Switch
Keychron Milk POM Switch
Crafted with advanced self-lubricating POM and POK materials, the Keychron Milk POM Switch delivers an impressively smooth feel right out of the box and becomes even smoother over time with every keystroke. Pre-lubed for added consistency and paired with a deeper, more resonant thock in a low-profile design, it offers a refined and reliable typing experience across linear Red and tactile Brown or Banana switch options.


Customize
Hot-swappable
Since everyone has unique typing preferences, the K3 Ultra features a hot-swappable design. You can easily swap out every Keychron Milk POM switch in seconds to customize your experience—no soldering required.

Powerful ARM Core
An Epic Core Inside
A powerful ARM architecture MCU equipped with 1 MB of flash provides more flexibility for developers. The polling rate is 8000 Hz in 2.4 GHz and wired modes right out of the box, which makes the latency hardly noticeable even in competitive games.

Elevated Typing Experience
Interior Acoustic Foam
Elevate your typing with the K3 Ultra featuring advanced IXPE acoustic foam for silent keystrokes and enhanced comfort, coupled with resilient EPDM foam for superior key switch support, responsiveness, and durability. This keyboard redefines the standard for a quiet, comfortable, and responsive typing experience.

Customize
Customize Every Part
To build a fully customizable keyboard, we designed every component to be easy to assemble. Therefore, you can customize and adjust each component as you wish.

Customize
SUITABLE FOR ALL DEVICES
Designed for seamless compatibility across macOS and Windows. Easily switch between operating systems with the included Mac and Windows keycaps for a familiar typing experience on every device.

Keycaps
Low-Profile Double-Shot PBT Keycaps
Designed for a premium typing feel, the K3 Ultra features our unique double-shot PBT keycaps. They are made of durable, non-shine-through PBT material with excellent oil resistance for long-term use.

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.

Click here to test Keychron Launcher
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
Low-Profile Series Differences

Precision
Specs
Shipping policy
Hong Kong
Standard Delivery for Regular Items
Shipping and delivery for regular items (Mice, Keyboards, and Lightbulbs) generally take 2 to 4 working days; but could take up to 4 to 10 working days during/ right after promotional periods. We will dispatch your order via third party courier, the courier will usually call the recipient in advance to confirm the delivery arrangement.
Standard Delivery for Chairs, Desks, & Sim Rigs
Shipping and delivery for medium to large-size items (Chairs, Desks, and Sim Racing Rigs) generally take 7 to 10 working days; but could take up to 10 to 20 working days during/right after promotional periods. Our Dispatch Team will contact you 1 or 2 days before delivery to confirm a delivery date & time.
Delivery Fees & Additional Charges
We provide free delivery service* for orders over HKD $300, with a flat HKD $35 delivery fee for orders below HKD $300. Please see below for additional Charges
|
Item |
Additional Fee |
|
Chair/Desk/Sim Rig Remote Area Shipping to Tung Chung / Discovery Bay/ Chek Lap Kok/ Lantau Island |
$150 |
|
Chair/Desk/Sim Rig Item Remote Area Shipping to Ma Wan |
$100 |
|
Stair Charge Arrangement for Chairs and Desk Drawers (No charge for 2 steps or fewer ; 10 steps count as 1 floor for longer stairs.) |
$80 per floor |
|
Stair Charge Arrangement for Smaller than 1.8m Desks (No charge for 2 steps or fewer; 10 steps count as 1 floor for longer stairs.) |
$160 per floor |
|
Stair Charge Arrangement for 1.8m or Larger Desks (1st step count as 1 floor; 11st steps count as 2nd floor for longer stairs.) |
$250 per floor |
|
Stair Charge Arrangement for GT3 & ProAM (No charge for 2 steps or fewer; 10 steps count as 1 floor for longer stairs.) |
$200 per floor |
*Additional Charges could be handed to our delivery driver in the delivery process. We reserve the right to cancel the order if customers are unwilling to pay for the additional charges if the condition applies.
*Free Delivery service covers addresses only within a 100m parameter of the unloading point. An additional $60 HKD /100m will be charged if the condition applies.
*Our Delivery service is free of charge once per order. If the customer failed to organize a handoff of the order upon the agreed-upon time slot and location thus requiring a re-delivery. we will charge $250 HKD on each re-delivery.
*For Delivery service to outlying Islands (Lamma Island, Cheung Chau & Peng Chau, Tai O, Ngong Ping, Tong Fuk, Mui Wo), Items can only be arranged to be picked up by the customer at the departure pier.
Inquiries/Requests
For All Delivery Inquiries or requests, please contact us at (+852) 8481 0814 or aftersales@zenoxstore.com
Macau
Standard Delivery for Regular Items
Shipping and delivery for regular items (Mice, Keyboards, and Lightbulbs) generally take 2 to 4 working days; but could take up to 4 to 10 working days during/ right after promotional periods. We will dispatch your order via third party courier, the courier will usually call the recipient in advance to confirm the delivery arrangement.
Standard Delivery for Chairs, Desks, & Sim Rigs
Shipping and delivery for medium to large-size items (Chairs, Desks, and Sim Racing Rigs) generally take 7 to 10 working days; but could take up to 10 to 20 working days during/right after promotional periods. We will dispatch your order via third party courier, the courier will usually call the recipient in advance to confirm the delivery arrangement.
Delivery Fees
We provide free delivery service for orders over HKD $300, with a flat HKD $35 delivery fee for orders below HKD $300.
Inquiries/Requests
For All Delivery Inquiries or requests, please contact us at (+852) 8481 0814 or aftersales@zenoxstore.com
Taiwan
Standard Delivery for Regular Items
Shipping and delivery for regular items (Mice, Keyboards, and Lightbulbs) generally take 4 to 7 working days; but could take up to 7 to 14 working days during/ right after promotional periods. We will dispatch your order via third party courier, the courier will usually call the recipient in advance to confirm the delivery arrangement.
Standard Delivery for Chairs, Desks, & Sim Rigs
Shipping and delivery for medium to large-size items (Chairs, Desks, and Sim Racing Rigs) generally take 21 to 28 working days; but could take up to 28 to 35 working days during/right after promotional periods. We will dispatch your order via third party courier, the courier will usually call the recipient in advance to confirm the delivery arrangement.
Important: Real-name Authentication for Taiwan Individual Imported Shipment
All Taiwan individual imported express shipments require real-name authentication. You must download the “EZ WAY” real-name authentication APP (Android download/ iOS download) on mobile phone and perform the online authentication registration. The Full Chinese Name and the Taiwan telephone number you provided should also match with your registration correctly. Please learn more at https://eweb.customs.gov.tw/multiplehtml/3344
Once an order is confirmed, we will contact you directly to reconfirm the delivery details to ensure the delivery is successful.
Delivery Fees
We provide free delivery service for orders over TWD $2,000, with a flat TWD $205 delivery fee for orders below TWD $2,000.
Import Tax
Please be noted that when goods are shipped from overseas into Taiwan, local customs may impose taxes according to regulations. In such cases the recipient may receive a tax notification and will be responsible for the related taxes and fees. Zenox would not be able to estimate the custom duties beforehand as it will be calculated by the local customs authorities when the goods enter the country.
Inquiries/Requests
For All Delivery Inquiries or requests, please contact us at (+852) 8481 0814 or aftersales@zenoxstore.com