This article covers 【国内正規品】Keychron K13 Max QMK対応ワイヤレス・カスタムメカニカルキーボード 2.4GH.

Overview

The Keychron K13 Max is a low-profile wireless mechanical keyboard that squeezes a full numpad into a compact 80% layout. It supports three connection modes — 2.4GHz wireless, Bluetooth 5.1, and USB wired — making it a flexible choice for both office work and gaming. The slim aluminum body houses Gateron Low-Profile MX 2.0 red switches, delivering a tactile mechanical feel without the bulk of a traditional full-size board.
QMK/VIA firmware support means every key can be remapped and macro-configured directly in a browser, while double-shot PBT keycaps and RGB lighting round out the package. In the market, the K13 Max occupies a distinctive mid-tier position: a numpad-equipped board that stays compact, with customization depth that rivals far more expensive keyboards.

Connectivity & Compatibility

The K13 Max offers three ways to connect: 2.4GHz wireless, Bluetooth 5.1, and USB wired. Both 2.4GHz and wired modes run at a 1000Hz polling rate, which keeps input latency low for gaming. Bluetooth 5.1 supports pairing up to three devices at once, so you can switch between a PC, smartphone, and tablet without re-pairing.
It works with macOS, Windows, and Linux, and the keycaps and keymaps can be switched to match each OS. The hot-swappable switch sockets let you change switches without soldering, and QMK/VIA remapping is handled through the Keychron Launcher in a browser while the keyboard is connected by cable.

Product Info

The K13 Max is sold as a domestic authorized product with a reference price of 22,880 yen. The package includes a USB cable, so you can start using it right away. Warranty details and release timing are best confirmed on the product listing, but the authorized domestic channel adds peace of mind for support.
Positioned in the mid-tier, the K13 Max stands out for its rare 80% layout with an integrated numpad and full QMK/VIA support. It is designed for users who want a slim mechanical keyboard that still delivers a satisfying typing feel, balancing office productivity and gaming responsiveness in one unit.

Best Use Cases

Office workers who rely on a numpad will appreciate keeping number-entry speed while reclaiming desk space. The 80% layout is noticeably shorter than a full-size board, giving the mouse more room to move.
Gamers benefit from the 1000Hz polling rate in 2.4GHz mode and the quiet typing experience. The IXPE sound-absorbing foam and latex foam inside reduce noise while keeping keystrokes responsive, which is handy for late-night sessions.
Users who switch between Mac and Windows will find the multi-device Bluetooth pairing and per-OS keymaps via QMK/VIA especially useful. On the other hand, if you prefer the deeper travel of a standard-height mechanical switch or need a traditional full-size numpad layout, the low-profile feel of the K13 Max may not be the right fit.

Product Disclosure (Amazon)

  • Manufacturer: Keychron
  • Seller: Keychron Japan
  • Fulfilled by: Amazon
  • ASIN: B0F74NJQSK
  • Note: This article covers a manufacturer-made product based on Amazon listing details.