Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard

Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard - View 3

Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard - View 4

Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard - View 5

Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard - View 6

$82.79 ~~$114.99~~ In stock

Keychron K4 Ultra 8k is a wireless custom mechanical keyboard with a sleek, durable build. It supports 2.4 GHz, Bluetooth, and wired connections. Through the Keychron Launcher web app, users can remap keys and create macro commands on its 96% compact layout. Powered by ZMK firmware, it enables an 8K polling rate in wireless mode while delivering up to 600 hours of battery life. It is also fully compatible with Windows, macOS, and Linux.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Robert ★★★★★ Oct 23, 2026

The keycap customization through the web app was surprisingly easy to set up, and I’ve got my layout dialed in perfectly. Typing on this thing feels incredibly solid—definitely a step up from my old board.

Jacob I. ★★★★★ Oct 22, 2026

The 2.4 GHz wireless connection has been rock solid for me, no noticeable lag even during intense gaming sessions. The aluminum body gives it a premium feel that sits nicely on my desk, and the Bluetooth switch between my laptop and PC is seamless.

Sebastian ★★★★★ Oct 20, 2026

Swapped between Bluetooth and the 2.4 GHz dongle across three devices all morning without a single drop, and the 8K polling over wired feels ridiculously snappy. The Launcher web app made remapping a breeze.