This article covers 【国内正規品】Keychron K4 Version2 ワイヤレス・ゲーミングメカニカルキーボード 100キー.

Overview

The Keychron K4 Version2 is a wireless mechanical keyboard that packs a full number pad into a compact 96% layout. It features Gateron G Pro Brown switches, offering a tactile bump with a relatively quiet sound profile. Connectivity options include both Bluetooth 5.1 and USB Type-C wired mode, allowing you to pair up to three devices and switch between them instantly. This keyboard is designed for users who need a dedicated numpad but want to save desk space. The white LED backlight helps in low-light conditions, and the included keycap set supports both Mac and Windows layouts out of the box. It's a versatile choice for productivity-focused users who work across multiple platforms.

Connectivity & Compatibility

The K4 V2 uses a Broadcom Bluetooth 5.1 chipset for wireless connections, supporting up to three paired devices such as laptops, tablets, and smartphones. Switching between devices is handled via a simple key combination. Wired mode via USB Type-C provides a lag-free connection ideal for gaming or when you need to charge the battery while typing. Compatibility spans Windows, macOS, iOS, and Android. A physical switch on the side toggles between Mac and Windows modes, and the keyboard ships with extra keycaps for both operating systems. Note that NumLock functionality is only available in Windows mode. The keyboard works out of the box with any modern device that supports USB HID or Bluetooth HID profiles.

Product Info

Released around 2022, the Keychron K4 Version2 is widely available through Japan and other retailers. It sits in the mid-range price tier for full-size mechanical keyboards, typically retailing around ¥22,000. The package includes a USB-A to C cable, a keycap puller, extra keycaps for Mac/Windows, and a user manual. Market positioning: this is a practical, no-nonsense wireless mechanical keyboard that prioritizes functionality and space efficiency over flashy RGB lighting or hot-swap sockets. It's aimed at professionals and home users who want a reliable daily driver with a numpad.

Best Use Cases

Office workers who rely on a numpad: Accountants, data entry specialists, and anyone who frequently inputs numbers will appreciate the dedicated numpad in a compact form factor. The Bluetooth multi-device pairing is great for switching between a desktop PC and a laptop. Users who switch between Mac and Windows: The built-in OS toggle switch and dual-platform keycaps make this keyboard a seamless companion for a Mac mini and a Windows gaming PC on the same desk. Wired mode ensures zero latency when needed. * Mechanical keyboard newcomers who prefer quiet tactility: Gateron G Pro Brown switches offer a gentle bump without the loud click of Blue switches, making them suitable for shared offices or quiet home environments. The typing feel is satisfying without being disruptive. If you need per-key RGB lighting or hot-swappable switches for customization, consider the Keychron Q or V series instead. Also, if you prefer an ultra-compact layout (60% or 65%), the K4's 96% size may still feel too large for your setup.

Product Disclosure (Amazon)

  • Manufacturer: Keychron
  • Seller: Takumido
  • Fulfilled by: Takumido
  • ASIN: B0B5L19H68
  • Note: This article covers a manufacturer-made product based on Amazon listing details.