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Keychron J12 HE Wireless Magnetic Switch Custom Keyboard

SKU: J12H-H1
Regular price $109.99

Type
Color
Switches

Specifications

  • Layout: 75%, ANSI
  • Connectivity: 2.4 GHz, Bluetooth, wired; 1000 Hz polling rate
  • Switches: Keychron Ultra-Fast Lime Magnetic Switch; hot-swappable
  • Build: Plastic Mount Style Gasket, gasket mount
  • Keycaps: Double-shot PBT keycaps
  • Software: QMK firmware; Keychron Launcher web app for key remapping and macros; works with Windows
  • Backlight: South-facing RGB LED Switch Support Yes Stabs
  • Weight: 952 g ± 10g

Product details

Keychron J12 HE is a wireless 75% magnetic switch keyboard built for work and gaming. It supports 2.4 GHz, Bluetooth, and wired modes, with full key customization, adjustable actuation, and rapid trigger settings via Keychron Launcher. Powered by Keychron Ultra-Fast Lime Magnetic Switches, it delivers fast, precise control, plus instant switching between Default, Gaming, and Gamepad modes.

Regular price $109.99

Keychron J12 HE

Meet the J12 HE, a 75% layout wireless QMK custom keyboard equipped with magnetic switches and advanced TMR sensors, built for both productivity and play. With 0.1 mm precision, 0.2–3.3 mm adjustable actuation, and dynamic rapid trigger, the J12 HE delivers precise control over every keystroke — from long typing sessions at work to the split-second demands of competitive gaming.

Keychron J12 HE Wireless Magnetic Keyboard Hero Image
Keychron J12 HE features
Keychron J12 HE Wireless Magnetic Keyboard 2

Switch Modes Instantly, Work Your Way

Move between Default, Gaming, and Gamepad modes instantly with the dedicated Profile Switch. Store different settings for different activities and switch between them without opening software, changing menus, or interrupting your workflow. The right setup is always one switch away.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard Default Gaming and Gamepad modes

Built for Mac, Windows, and Multi-Device Workflows

Made for users who switch between systems and screens throughout the day, the J12 HE supports both Mac and Windows and streamlines workflows across laptops, desktops, and tablets. With 2.4 GHz wireless at 1000 Hz polling rate, Bluetooth 5.2, and Type-C wired connectivity, it fits real-world work and multitasking setups with less friction.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard Desk Setup
ZMK
Program with Launcher
Keychron Launcher

Program with Launcher

The Launcher web app makes it easy to remap keys, create macros, adjust lighting effects, and fine-tune advanced settings like actuation or polling rate. Take control and optimize your productivity like never before.

Program the J12 HE keyboard with Launcher
Click here to test Keychron Launcher

* Please use the latest version of Chrome, Opera, or Edge to open Launcher and connect the keyboard to your
device via wired mode.
 

ZMK
Program with Launcher
Keychron Launcher

Program with Launcher

The Launcher web app makes it easy to remap keys, create macros, adjust lighting effects, and fine-tune advanced settings like actuation or polling rate. Take control and optimize your productivity like never before.

Launcher-magnetic.jpg__PID:3dd079f6-72dc-449a-aaac-2b15dbc2e38d
Click here to test Keychron Launcher

* Please use the latest version of Chrome, Opera, or Edge to open Launcher and connect the keyboard to your
device via wired mode.
 

Adjustable Actuation Point

Customize each key with precision, adjusting actuation points from 0.2 to 3.3 mm with 0.1 mm sensitivity. Set shallow keypresses for instant actions and deeper ones for deliberate engagement, minimizing accidental touches and giving you an edge in both gaming and typing.

Keychron J12 HE Wireless Magnetic Keyboard with powerful MCU

Last Key Priority (LKP)

LKP allows seamless directional changes by prioritizing the last key pressed, ensuring smoother gameplay in titles like Valorant. This helps reduce the delay between key presses, giving a competitive edge by allowing for quicker changes in direction without waiting for previous keys to be fully released.

One Key. Multiple Commands

Thanks to Dynamic Keystrokes (DKS), you can now assign up to 4 distinct actions per key based on press depth. A light press moves your character, a deeper press makes them run, and releasing the key enables additional commands. This layered control lets you execute multiple moves with ease.

Dynamic Keystrokes assign up to four actions to one key based on press depth.

DYNAMIC RAPID TRIGGER

Activate or deactivate keys based on how far they travel, not predefined points. This means immediate key reactions—press to activate, release to reset—allowing for faster, more precise keystrokes. In rapid gameplay, this translates to executing complex actions in real-time without delay, giving you a serious advantage during fast-paced sequences.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard Desk Setup

ANALOG MODE

Experience the power of Analog Mode on your J14 HE, bringing game controller-like precision to your keyboard. This mode enables variable inputs instead of the usual on/off signals, letting you achieve more fluid and dynamic control. With each keypress, the J14 HE detects how far you press, translating it into different speeds and intensities. Enjoy nuanced control and heightened responsiveness in racing games, sports simulations, and more.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard Desk Setup
Keychron J12 HE Wireless Magnetic Switch Custom Keyboard MCU

An Epic Core Inside

Engineered with a powerful chip (MCU) to provide more flexibility. The polling rate is 1000 Hz across both 2.4 GHz and wired modes. With 0.1 mm actuation precision, every keystroke is delivered with consistency and accuracy, giving you a real edge in competitive gaming.

Plug-and-Play Receiver

For a better 2.4 GHz wireless experience, the J12 HE comes with a Type-A receiver. Enjoy quick Plug-and-Play setup. Or, put it away in the keyboard storage slot in the top-right corner.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard 3 Modes
Keychron J12 HE Wireless Magnetic Switch Custom Keyboard MCU

Hot-Swappable

Unlike mechanical switches that rely on physical contact, magnetic switches detect key presses through magnetic fields — making them smoother, more durable, and easy to swap out with compatible magnetic switches.

Double-Shot MDA PBT Keycap

For a better 2.4 GHz wireless experience, the J12 HE comes with a Type-A receiver. Enjoy quick Plug-and-Play setup. Or, put it away in the keyboard storage slot in the top-right corner.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard 3 Modes
Keychron J12 HE Wireless Magnetic Switch Custom Keyboard MCU

Advanced TMR Sensors

Equipped with cutting-edge Tunneling Magnetoresistance (TMR) technology to detect precise distance and magnetic field variations through subtle resistance shifts. Every key features a dedicated TMR sensor for superior resolution, delivering pinpoint accuracy, ultra-low latency, and an unparalleled magnetic switch input experience.

Magnetic Field Sensitivity: up to 100 mV/V/Oe

Advanced Acoustic Foams

Elevate your typing with the J12 HE, featuring multi-layer acoustic foam for smoother keystrokes and a more refined sound. Designed for magnetic switches, the refined internal structure delivers smoother keystrokes, stable feedback, and precise responsiveness.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard Exploded View

Keychron Ultra-Fast Lime Magnetic Switches

The Keychron J12 HE comes with pre-lubed Keychron Ultra-Fast Lime Magnetic Switches for an ultra-stable and ultra-responsive typing experience with an industry-leading, lightning-fast response time, and precise control over the way your keyboard feels and responds.

Made from POM material, they deliver an incredibly satisfying, soft, and thocky typing sound, enhancing every keystroke for a more enjoyable typing experience.

Keychron J12 HE Wireless Magnetic Switch Custom Keyboard Ultra-fast lime magnetic switches

RGB Backlighting

Comes with more than 22 RGB backlight settings (as well as a static white backlight option), and 14 types of backlight settings on the White Backlight version. You can further fine-tune the RGB hue, saturation, brightness, and effect speed with ease.

Ergonomic support for the Keychron J12 HE Wireless Magnetic Keyboard

Ergonomic Support

Three levels of adjustable typing angle (3.5/6.4/8.4 degrees) and profile keycaps work together to provide long-lasting ergonomic support for your wrist.

What's in the box?

Package list of the Keychron J12 HE Wireless Magnetic Keyboard

Specs

Width147.73 mm
Length342.32 mm
Front Height21.35 mm (without keycaps)
Back Height29.53 mm (without keycaps)
Angle3.5/6.4/8.4 degrees
Weight952 g ± 10g
Polling Rate1000 Hz
Body MaterialPlastic
Mount StyleGasket
KeycapsDouble-shot PBT keycaps
SwitchesKeychron Ultra-Fast Lime Magnetic Switch
MCU256 KB
BacklightSouth-facing RGB LED
Switch SupportYes
StabsPlate-mounted Stabilizer
Connectivity2.4 GHz / Bluetooth / Type-C wired
CableType-A to Type-C cable
Compatible System Windows / macOS / Linux
Operating Environment-10℃ to 50℃
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