The Keychron K4 Max QMK Wireless Mechanical Keyboard is designed for users who refuse to compromise between functionality and desk space. Featuring a 96% layout with 100 keys, it provides the essential utility of a full-size keyboard—including a dedicated number pad—while maintaining a compact form factor that maximizes your workspace.
Connectivity is a core strength of the K4 Max, offering tri-mode flexibility. Users can switch between a low-latency 2.4 GHz wireless connection with a 1000 Hz polling rate for gaming, Bluetooth 5.1 for multitasking across up to three devices, or a stable USB-C wired mode. This versatility makes it an ideal hub for those switching between a workstation, a gaming rig, and a tablet.
Customization is pushed to the limit with open-source QMK firmware and the Keychron Launcher web app. This allows for deep key remapping, macro programming, and multi-layer configurations without the need to install bulky software. For those who want to tactilely tune their experience, the hot-swappable version allows users to swap 3-pin and 5-pin MX style switches without soldering.
Typing acoustics and feel have been significantly upgraded. The K4 Max incorporates multiple layers of acoustic foam—including IXPE, PET, and EPDM—to ensure a dampened, premium sound. The double-shot PBT keycaps in a unique OSA profile (spherical-angle) provide a comfortable fingertip feel and superior oil resistance, while screw-in PCB stabilizers reduce wobble on larger keys.
Designed for universal compatibility, the K4 Max includes dedicated keycaps and a system toggle for both macOS and Windows. With south-facing RGB backlighting and three adjustable typing angles (3º, 7º, and 10º), it offers a personalized and ergonomic experience tailored to the user's specific needs.
Specifications
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100 (96% Layout)
Number Of Keys
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2.4 GHz Wireless, Bluetooth 5.1, USB-C Wired
Connectivity
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1000Hz (2.4GHz & Wired), 125Hz (Bluetooth)
Polling Rate
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Keychron Super Switch (Hot-swappable optional)
Switch Type
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Double-shot PBT
Keycap Material
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OSA (OEM profile with spherical-angle)
Keycap Profile
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South-facing RGB (22+ settings)
Backlighting
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4000 mAh
Battery Capacity
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Up to 190 hours (backlight off), 100 hours (lowest RGB)
Battery Life
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QMK / Keychron Launcher
Firmware
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391.29mm x 140.27mm
Dimensions
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1290g
Weight
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3º, 7º, 10º
Typing Angles
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macOS, Windows, Linux
Compatible Systems
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ARM Cortex-M4 32-bit STM32F402 (256KB Flash)
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thumb_up Pros
Extremely flexible connectivity options for multi-device users
Web-based customization means no software installation required
High-quality PBT keycaps resist shine and oil over time
Comprehensive acoustic dampening for a quieter typing sound
Full compatibility with both macOS and Windows layouts
thumb_down Cons
96% layout may have a learning curve for some users
ABS frame may feel less premium than aluminum alternatives
For Sri Lankan shoppers, the Keychron K4 Max is available at major tech retailers like Nanotek and Techroot. If you prioritize a clean desk but need a number pad for data entry or gaming, this 96% layout is the perfect middle ground. Ensure you choose the hot-swappable version if you plan to experiment with different switch types in the future.
★★★★★
"The 2.4GHz connection is incredibly responsive, making it a viable option for competitive gaming."
★★★★★
"I love that I can remap keys through the web browser without downloading any software."
★★★★★
"The OSA profile keycaps feel much more comfortable for long typing sessions than standard OEM keys."
★★★★★
"The addition of multiple acoustic foams really cleans up the sound profile of the keyboard."
Video Reviews
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