SKU: 37884102457

Keychron K3 Max Ultra-Slim Wireless 75% Mechanical Keyboard, QMK/VIA, Gateron Brown

Sale price$989.06 Regular price$1098.95
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Description

Keychron K3 Max Ultra-Slim Wireless 75% Mechanical Keyboard, QMK/VIA, Gateron BrownThe Keychron K3 Max QMK VIA Low Profile Wireless Custom Mechanical Keyboard is an ultra slim 75% compact mechanical keyboard designed for maximum versatility and efficiency. Supporting 2. 4 GHz, Bluetooth 5. 1, and USB Type C wired connectivity, it seamlessly adapts to various work and gaming environments. Users can take full control of their setup using the Keychron Launcher web app, which enables key remapping, macros, and custom commands with ease.

The Keychron K3 Max QMK/VIA Low Profile Wireless Custom Mechanical Keyboard is an ultra-slim 75% compact mechanical keyboard designed for maximum versatility and efficiency. Supporting 2.4 GHz, Bluetooth 5.1, and USB Type-C wired connectivity, it seamlessly adapts to various work and gaming environments. Users can take full control of their setup using the Keychron Launcher web app, which enables key remapping, macros, and custom commands with ease. The LSA (low-profile spherical-angled) keycaps are designed for both Windows and macOS, ensuring a smooth typing experience right out of the box.

Designed for fast-paced gaming and professional multitasking, the K3 Max features a 1000Hz polling rate in both 2.4GHz and wired modes, minimizing input lag for near-instant responsiveness. The Gateron Low Profile Brown switches offer a tactical, pre-lubed feel, delivering responsive keystrokes with medium sound levels, making them ideal for Midway office work and gaming. The keyboard’s hot-swappable version allows users to customize their typing experience without soldering, making it easier than ever to swap switches for a personalized feel.

Powered by QMK/VIA firmware, the K3 Max provides extensive customization options for power users. The ARM Cortex-M4 32-bit MCU with 256KB Flash ensures stable performance, while the IXPE acoustic foam dampens keystroke sounds, creating a quieter and more comfortable typing experience. Additionally, redesigned stabilizers help reduce key wobble, especially on larger keys like the space bar, Shift, Enter, and Backspace, ensuring greater accuracy and consistency. For Mac users, the dedicated macOS layout replicates the Apple keyboard function keys, making it a seamless transition for Apple enthusiasts.

Aesthetically, the K3 Max combines functionality with style, featuring double-shot PBT keycaps for enhanced oil resistance and durability. With 22 RGB backlight effects (plus a white backlight option), users can further fine-tune brightness, hue, and effect speed for a fully immersive experience. The 1550mAh battery provides up to 73 hours of wireless use with backlight off and 42 hours with RGB at its lowest brightness, ensuring long-lasting wireless performance. Compact, powerful, and highly customizable, the Keychron K3 Max sets a new benchmark for low-profile mechanical keyboards.

FEATURES:

  • Customisable keyboard with 75% layout
  • 2.4GHz & Bluetooth connection
  • QMK/VIA Support
  • Double-shot PBT keycaps
  • Ultra-slim design
  • Hot-swappable
  • RGB LED lights
  • Low profile Gateron Low Profile BROWN switches
  • Acoustic foam

SPECIFICATIONS:

Colour Black
Number of Keys 84 (75%)
Switches Gateron low-profile mechanical
Switch Face North-facing
Number of Multimedia Keys 12
Frame Material ABS + Aluminium frame
Keycap Material Low-profile double-shot PBT
Layout ANSI
Polling Rate (2.4GHz and Wired Mode) 1000Hz
Polling Rate (BT Mode) 90Hz
N-Key Rollover (NKRO) Yes for both wireless and wired modes
Backlit 22 types of RGB backlight options plus endless possibilities
Battery 1550mAh rechargeable li-polymer battery
Wireless Working Time (Backlit off) Around 73 hours (Lab test result may vary by actual use)
Wireless Working Time (RGB) Around 42 hours (Lowest brightness)
Connection 2.4GHz / Bluetooth / Type-C wired
Bluetooth version 5.1
Bluetooth Device Name Keychron K3 Max
Compatible System macOS / Windows / Linux
Typing Angle 2.5º, 4.2º and 6.5º
MCU ARM Cortex-M4 32-bit STM32F402 (256KB Flash)
Operating Environment -10 to 50℃
Gateron Low Profile BROWN Switch Operating force: 55 ± 15 gfPre-travel: 1.7 ± 0.4mmTravel distance: 3.0 ± 0.2mmBehavior: TactilePre-lubed: YesSound level: MediumSuitable for: Midway Office/gaming
Operating force 55 ± 15 gf
Pre-travel 1.7 ± 0.4mm
Travel distance 3.0 ± 0.2mm
Behavior Tactile
Pre-lubed Yes
Sound level Medium
Suitable for Midway Office/gaming
Product Dimensions 30.6 x 11.6 x 1.7~2.2 cm
Product Weight 525g

WHAT’S IN THE BOX:

  • Keychron K3 Max QMK/VIA Low Profile Wireless Custom Mechanical Keyboard | BROWN Switches – Black x1
  • Type-A to Type-C Cable x1
  • Extension Adapter for Receiver x1
  • Type-A 2.4GHz Receiver x1
  • Keycap & Switch Puller x1
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37884102457

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4.2 ★★★★★
Based on 1193 reviews
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Product Reviews
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Verified Purchase
tim edwards
San Leandro, US
★★★★★ 5
Beware! Very thick wire
Size: 50ft, Style: 6C-18AWG
I'm not going to ding the product, because it's totally what it says it is. I didn't look at the diagrams to see that this wire is 10mm wide. Almost half an inch. Waaaay to thick for the project I needed it for.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
K
Verified Purchase
Kandace Lopez
Waukegan, US
★★★★★ 4
Fair product
Size: 30ft, Style: 6C-18AWG
nice product good price, the only issue I had was the sleeve was very loose on the wires so doesn't really hold the wires in place.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
D
Verified Purchase
Dale Ngo
Natrona Heights, US
★★★★★ 5
Fantastic to do 1 run and power multiple loads
Size: 30ft, Style: 6C-18AWG
Great for wiring up multiple loads. In my case multiple lighting with different switches so that I can turn them on independently from one another.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
C
Verified Purchase
CUSTOMS 572
Massapequa, US
★★★★★ 5
Durable, very nice wiring harness.
Size: 50ft, Style: 6C-18AWG
I am updating an emergency vehicle and am using this to run the equipment. It’s easy to work with and good thick wire. Came with nice little Velcro straps for keeping the roll together. The finish is nice on the outer casing. Nice gloss black. Excellent product. In fact I bought another 50 foot roll. And the prices for this is extremely good. Glad I found this wiring.
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Reviewed in the United States on January 31, 2024
C
Verified Purchase
Capt Chris
Draper, US
★★★★★ 5
Good quality wire
Size: 100ft, Style: 6C-18AWG
Good wire. Nice heaven outer casing. Have used several hundred feet of this for industrial vehicles. It comes in several wire counts. We use the 4 wire and 6 wire mostly and have never found an issue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2025

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