This article covers 【国内正規品】Keychron K1 Version5 ワイヤレス・メカニカルキーボード（テンキーレス）.

Overview

The Keychron K1 Version5 is a tenkeyless wireless mechanical keyboard that packs low-profile Gateron switches into an ultra-slim aluminum chassis measuring just 17mm in thickness. Designed for users who value desk space and multi-device workflow, it bridges the gap between traditional mechanical keyboards and slim, portable alternatives. This keyboard supports both Bluetooth 3.0 (up to 3 paired devices) and USB-C wired connection. It works with macOS, Windows, iOS, and Android, with a hardware slider to switch between operating systems. The Gateron tactile brown switches offer a crisp, clicky feel while the low-profile design shortens key travel, reducing finger fatigue during extended typing sessions. The switch durability is rated at 50 million keystrokes.

Connectivity & Compatibility

The K1 Version5 connects via USB-C for wired operation or Bluetooth 3.0 for wireless use. Up to three devices can be paired simultaneously, and switching between them is done using the slider on the side of the keyboard. Supported OS: macOS, Windows, iOS, Android Connection modes: USB-C (wired), Bluetooth 3.0 (wireless) Key rollover: N-key in wired mode, 6-key rollover in wireless mode Included accessories: USB-C cable, Windows keycaps (partial set), user manual Mac users will appreciate that the function keys (F1-F12) follow Apple's layout, which is rare among mechanical keyboards. Windows users get replacement keycaps to swap Command and Alt keys. The keyboard is also compatible with iPad and Android tablets, making it a versatile companion for mobile setups.

Product Info

The Keychron K1 Version5 (tenkeyless, Gateron brown switches) is a current model launched in 2021. It is available as an official Japanese import on for approximately ¥16,940 (as of June 2026). Brand: Keychron Switch type: Gateron low-profile mechanical (tactile brown) Layout: Tenkeyless (87 keys), US ANSI Backlight: 18 RGB lighting effects Dimensions: 335 × 120 × 17 mm (W×D×H) Weight: Approx. 510g (without cable) In terms of market positioning, the K1 sits in the entry-to-mid range for low-profile mechanical keyboards. Compared to full-size mechanical models, it offers significant portability and Bluetooth multi-device support, making it a well-rounded choice for both office and personal use.

Best Use Cases

Mac users seeking a mechanical keyboard: The K1 is one of the few mechanical options with native Mac key layout and full function row support. The slim profile matches well with MacBooks, though users who prefer silent operation might want to consider the red (linear) switch variant. Multi-device workers: Pair the keyboard with a desktop, laptop, and tablet simultaneously. Switching between them is instant via the slider. Battery life is rated at around 34 hours (backlit off), and charging is done via USB-C. Writers and long-session typists: The shorter key travel of low-profile switches reduces finger movement, which can help reduce RSI risk during extended typing. However, enthusiasts who love deep, thocky key presses may find it unsatisfying. Mobile professionals: At 17mm thin and 510g, the K1 slips easily into a laptop bag. Perfect for cafés, co-working spaces, or on-the-go setups. Not ideal for heavy numeric data entry, as there is no numpad. If you require a numpad, crave heavy switch feedback, or need absolute silence, consider other options. But for most users seeking a low-profile, multi-OS mechanical keyboard, the Keychron K1 Version5 nails the essentials.

Product Disclosure (Amazon)

  • Manufacturer: Keychron
  • Seller: SUPERKOPEK
  • Fulfilled by: SUPERKOPEK
  • ASIN: B0B7DGC78L
  • Note: This article covers a manufacturer-made product based on Amazon listing details.