Keychron K4 96% Wireless Mechanical Keyboard - Compact 100-Key Layout

In this review the Keychron K4 version 2 is considered by reviewers as a compact workhorse for productivity and light gaming; its biggest selling point is the 96% layout that packs a full number pad into a smaller footprint so users get numeric input without sacrificing desk space. The combination of Broadcom Bluetooth 5.1 wireless, USB Type-C wired mode, and a large 4000 mAh battery makes it a practical daily keyboard for Mac and Windows users who want reliable typing feel and long battery life from Gateron G Pro Red switches.

Key Features

• 96% layout: Provides a full 100-key set and number pad in a compact chassis so users retain productivity keys while saving desk space.
• Dual connectivity: Connects to up to three devices via Bluetooth 5.1 and also supports a wired USB Type-C connection for low-latency use and charging.
• Mac and Windows compatibility: Ships with a Mac-oriented key layout plus extra keycaps for Windows, making it easy to switch operating systems without missing function keys.
• Long battery life: A 4000 mAh battery can last up to 240 hours with backlight off, offering extended unplugged use between charges.
• Gateron G Pro Red switches: Linear mechanical switches deliver smooth, quiet keystrokes with up to 50 million keystroke lifespan for consistent responsiveness.
• White LED backlight: Simple white lighting with static or flashing modes gives clear legends and a modern look without heavy power draw.

Who It's For

The K4 suits home office users, Mac users who want dedicated function keys, and gamers who prefer a compact board with a number pad. Its mix of wireless multi-device pairing and wired mode makes it versatile for someone who switches between a laptop, tablet, and phone throughout the day.

Users who need per-key RGB lighting, highly configurable software macros, or ultra-low wireless latency for competitive esports should look elsewhere; this model focuses on a balanced typing experience, basic white backlight, and cross-platform convenience rather than advanced customization.

Pros & Cons

Pros

• Solid compact 96% layout keeps a number pad without a full desktop footprint.
• Reliable Broadcom Bluetooth 5.1 chipset for multi-device pairing and good compatibility.
• Large 4000 mAh battery gives long runtime, especially with backlight disabled.
• Gateron G Pro Red switches provide smooth linear keystrokes that many find comfortable for typing and gaming.

Cons

• White LED backlight is basic and lacks per-key RGB customization that some users expect.
• Some customers report mixed Bluetooth behavior, so wireless reliability can vary by environment.

Specifications

Our Verdict

The Keychron K4 v2 is a strong value for users who want a compact full-function keyboard that balances typing comfort, battery life, and cross-platform convenience. It is especially good for Mac users and mixed-device workflows; choose it when you need a number pad in a smaller footprint and prefer smooth linear switches over clicky options.

Frequently Asked Questions

Can it switch between multiple Bluetooth devices?
Yes, it can pair with and switch among up to three Bluetooth devices using the Broadcom Bluetooth 5.1 chipset.

Does it include keycaps for Windows and Mac?
Yes, the K4 ships with extra keycaps so you can swap legends for either Mac or Windows layouts.

How long does the battery last?
With backlight disabled the 4000 mAh battery can last up to 240 hours; using the white LED backlight reduces runtime.