Keychron - K1 Ultra 8k Wireless Custom Mechanical Keyboard

KEYCHRON K1 ULTRA 8K
The K1 Ultra 8K is a low-profile wireless mechanical keyboard with an elegant TKL layout, premium natural wood accents, and a durable metal frame. It delivers an ultra-fast 8K polling rate in both wired and wireless modes, ensuring lightning-fast response and exceptional performance. With Bluetooth, wired, and ultra-low-latency 2.4 GHz connectivity, it easily adapts to any setup. Powered by open-source ZMK firmware, the K1 Ultra 8K offers extensive customization options, while up to 490 hours of battery life lets you work longer between charges.

Three-mode connectivity
Harness the power of an 8000 Hz polling rate in both wired and 2.4 GHz wireless modes, delivering ultra-fast responsiveness and professional-grade precision for competitive gaming. With Bluetooth 5.2, you can seamlessly switch between up to three devices, making multitasking easier. From lightning-fast performance to versatile wireless connectivity, the K1 Ultra 8K offers it all.


490 hours of use on a single charge
With a 2600 mAh battery, optimized firmware, and improved circuit design, the K1 Ultra 8K delivers up to 490 hours of use at an 8000 Hz polling rate with the backlight turned off, redefining the possibilities of wireless performance.
Wood meets metal
The K1 Ultra 8K combines the natural elegance of wood with a precision metal frame, creating a look that is both refined and striking. The contrast between the warm texture of wood and sleek metal craftsmanship offers the perfect balance of natural beauty and modern performance.

Slim without compromise
With a low-profile switch height of 11.9 mm, a slim 20.0 mm front edge, and a compact TKL layout, the K1 Ultra 8K delivers slim, ergonomic typing comfort with shorter key travel, ensuring comfort during long hours of typing while saving desk space.

Keychron Milk POM Switch
Made from advanced self-lubricating POM materials, the Keychron Milk POM Switch delivers an impressively smooth feel right out of the box and becomes even smoother with every keypress. Factory-lubed for greater consistency and paired with a deeper, more resonant thock sound in a low-profile design, it offers a refined and reliable typing experience in linear Red, tactile Brown, and tactile Banana switch variants.


Hot-Swappable
Since everyone has individual typing preferences, the K1 Ultra 8K features a hot-swappable design. You can easily replace each Keychron Milk POM switch in seconds to customize the keyboard to your needs — no soldering required.


Multifunction knob
Designed to streamline your workflow, the rotary knob provides smooth and precise volume adjustment by default. With Keychron Launcher, you can customize the knob for your preferred commands, such as screen brightness adjustment, zooming in/out, brush size changes, media control, or backlight settings management.
An epic core inside
Inside the K1 Ultra 8K is a powerful MCU with 1 MB of flash memory, providing unparalleled flexibility for advanced customization and expanded functionality. It achieves an ultra-fast 8K polling rate, ensuring every keypress is registered with near-zero latency and exceptional accuracy during the most demanding games and professional tasks.

Internal acoustic foam
The K1 Ultra 8K features a carefully engineered acoustic structure with IXPE foam, EPDM foam, PET film, and bottom case acoustic foam. Together, these premium materials effectively reduce unwanted resonance and vibrations, delivering a cleaner, more refined typing sound and a more satisfying typing experience.

Customize every element
To create a fully customizable keyboard, we made sure every component is easy to assemble, adjust, and personalize.
KEYCAPS Double-shot PBT Keycaps offer excellent grease resistance and long-lasting durability, while the legends remain crisp and vibrant over time.
WOOD AND METAL FRAME
The K1 Ultra 8K combines natural wood with a precision metal frame, balancing natural elegance with modern, high-performance craftsmanship.
SWITCHESswitches are the core mechanical components; different types (linear/tactile) deliver unique feel and sound.
PLATEThe anodized aluminum plate in the keyboard holds the switches in place, provides structural support, and affects typing feel and sound.
IXPE FOAMIXPE foam effectively dampens vibrations generated during keypresses, providing a more stable typing experience with optimized acoustic feedback.
PET FILMPET film acts as a protective barrier, providing reliable electrical insulation and preventing dust ingress to protect internal components.
PCBThe printed circuit board registers keypresses, and its hot-swappable design enables easy switch replacement.
BOTTOM CASE ACOUSTIC FOAMBottom case acoustic foam effectively dampens vibrations and minimizes hollow sound, providing a softer, cushioned typing experience.
EPDM FOAMThis soft foam helps reduce vibrations and noise while providing a cushioned typing feel.
BOTTOM CASEThe solid, premium ABS bottom case provides quieter, vibration-free typing.

Suitable for all devices
Designed for seamless compatibility with macOS and Windows. Easily switch between operating systems with the included Keycaps for Mac and Windows, so you can enjoy familiar typing comfort on every device.


Low-profile double-shot PBT Keycaps
Designed for a premium typing feel, the K1 Ultra 8K comes equipped with our unique double-shot PBT Keycaps. They are made from durable PBT material that does not allow backlighting to shine through, with excellent grease resistance for long-lasting use.
Program with ZMK and Launcher
Open-source ZMK firmware offers unlimited possibilities for remapping keys, creating macros, shortcuts, and more. Now you can easily customize every key with the Keychron Launcher web app. With the built-in AI assistant (currently available in beta), keyboard personalization is no longer complicated — simply give a command in plain language, and AI handles the rest.

Unlock dynamic backlight control
Go beyond standard presets with over 22 RGB backlight settings — including a static white light option. Our advanced lighting engine includes two powerful features to spark your creativity: Per-key RGB and Mix RGB. You can also easily fine-tune and remap keys, creating your unique style with vibrant, dynamic RGB control.

Per-key RGB
With Per-key RGB, every key becomes a digital brushstroke. This feature lets you customize the color of each key individually, turning your keyboard into a vibrant canvas.
Mix RGB
With Mix RGB, you can divide your keyboard into two custom lighting zones, each with unique effects. Create contrasting combinations to make your entire setup stand out with vivid style.

Specification
| Manufacturer | Keychron |
| Model | K1 Ultra 8K |
| Type | Low-profile wireless mechanical keyboard |
| Version | Fully Assembled |
| Layout | TKL, 80% |
| Color | Black |
| Connectivity | Wireless 2.4 GHz, Bluetooth 5.2, wired USB-C |
| Polling rate | 8000 Hz – wired and 2.4 GHz connection; 125 Hz – Bluetooth |
| Multi-device support | Up to 3 devices via Bluetooth |
| switches | Keychron Milk POM Low Profile |
| Switch variants | Red – linear; Brown – tactile; Banana – tactile |
| Hot-swap | Yes, switch replacement without soldering |
| Keycaps | LSA Double-Shot PBT, non-shine-through |
| Stabilizers | Plate-mounted |
| Case material | Aluminum and wood |
| Bottom case material | ABS plastic |
| Plate material | Anodized aluminum alloy |
| Sound dampening | IXPE foam, PET film, EPDM foam and bottom case acoustic foam |
| Backlighting | North-facing RGB LED |
| Backlight control | Per-key RGB, Mix RGB, over 22 backlight modes |
| Knob | Multifunctional, programmable |
| NKRO | Yes, in wired and wireless mode |
| Firmware | ZMK Open Source |
| Configuration | Keychron Launcher – key mapping, macros, shortcuts and backlight settings |
| Microcontroller | Real-M300V 32-bit RTL8762GTH |
| Flash memory | 1 MB |
| Battery | Lithium polymer, 2600 mAh |
| Wireless battery life | Up to 490 hours at 8000 Hz with backlighting off |
| Dimensions | 358.6 × 128.3 mm |
| Front height | 15.44 mm without Keycaps |
| Rear height | 19.94 mm without Keycaps |
| Feet height | 2 mm |
| Weight | 628.9 g ± 10 g |
| Operating temperature | From -10°C to 50°C |
| Bluetooth device name | Keychron K1 Ultra 8K |
| Warranty | 12 months |
Compatibility
| Operating systems | Windows, macOS, Linux |
| 2.4 GHz wireless connection | Devices equipped with a USB-A port for connecting the included receiver |
| Bluetooth connection | Bluetooth-enabled devices; ability to save and switch between up to 3 devices |
| Wired connection | Devices with a USB-C or USB-A port using the included adapter |
| Keychron Launcher | Latest versions of Chrome, Edge, or Opera browsers; configuration requires a wired keyboard connection |
| System Keycaps | Included Keycaps for macOS and Windows |
Package content
| Keychron K1 Ultra 8K Keyboard | 1 pc. |
| USB-C Cable | 1 pc. |
| USB-A to USB-C Adapter | 1 pc. |
| 2.4 GHz USB-A Receiver | 1 pc. |
| Receiver Extension Adapter | 1 pc. |
| Keycap and Switch Puller | 1 pc. |
| Screwdriver | 1 pc. |
| Keycaps for macOS and Windows | Included |











