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Keychron KJ4 Wireless Custom Mechanical Keyboard, 2.4 GHz Bluetooth QMK 80% Layout RGB, Hot-swappable Brown Switch Compatible with Mac Windows Linux, 3750mAh Fast Charge Battery for Gaming - Black by Keychron - Used - Good condition

Keychron KJ4 Wireless Custom Mechanical Keyboard, 2.4 GHz Bluetooth QMK 80% Layout RGB, Hot-swappable Brown Switch Compatible with Mac Windows Linux, 3750mAh Fast Charge Battery for Gaming - Black

Brand: Keychron

Condition: Used - Good
$6228
$8096
-24% Save $1868
Updated: 8 days ago

Description

• Tri-Mode Pro Connectivity: 2.4G/Bluetooth 5.2/USB-C: Switch instantly between three modes: Stream music to 3 Bluetooth 5.2 devices, game lag-free with 2.4GHz HyperSpeed, or USB-C wired mode. Designed for multi-tasking pros.

• QMK/VIA Advanced Programming & Browser-Based Launcher: Reprogram every key via QMK/VIA firmware and build macros through the browser-based Launcher—no downloads, no OS restrictions. Save profiles to onboard memory on Windows, macOS, Linux

• Dual-OS Smart Switch: Out-of-box Windows compatibility with two programmable blank layers. macOS users, shortcuts to replicate Mission Control/Launchpad, no third-party tools needed. Ideal for hybrid teams and cross-platform developers

• Legend clarity meets vibrant RGB: Thick 1.5mm PBT keycaps resist oil and shine, while translucent doubleshot molding amplifies 16.8M-color RGB effects (8 preset modes + custom gradients). Perfect for low-light gaming setups and design studios

• Pro-Grade TKL Layout for 20% More Desk Space: The KJ4’s Tenkeyless design removes the numpad while retaining arrow keys and F-row—30% smaller than full-size boards. CNC aluminum base ensures stability during intense gaming marathons.

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Product Details

SKU:
awhd-ca-b0fmf2nrz5
Model:
KJ4-H3
Country:
CA
ASIN:
B0FMF2NRZ5

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $19 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Keychron products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.

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