Overview

  • Ultra-Fast 8K Polling Rate
    With an 8000 Hz polling rate, latency matches the 0.125 ms polling interval – that’s 1000x faster than human reaction time.
  • 550 Hours of Battery life
    Powered by efficient ZMK open-source firmware, the K5 Ultra achieves up to 550 hours of battery life (with backlight turned off) in 8K wireless mode —over three months of use on a single charge.
  • LSA Double-Shot PBT Keycaps
    LSA Double-Shot PBT keycaps ensure legends never fade and surfaces resist shine, even after long-term use.
  • Triple-Mode Connectivity
    Easily switch between USB wired, 2.4 GHz wireless, and Bluetooth to match your gaming, work, or multi-device setup.
  • Full Programmability with ZMK Launcher Software
    Use ZMK firmware and Launcher software to customize every key, macro, and layer for personalized workflows.

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Specifications

Capacity & configuration

Lighting Type
RGB
Keyboard Type
Gaming
Connection Type
Wired

Dimensions & weight

Product Name
K5 Ultra 8k 100% Custom POM Switch Mechanical Gaming Keyboard with Programmable ZMK Launcher Software
Product Height
0.58 inches
Product Width
4.68 inches
Product Depth
16.69 inches
Product Weight
1.58 ounces

Features

Brand
Keychron
Color
Black
Customizable Lighting
Yes
Numeric Keypad
Yes
Touchpad
No
Palm Rest
No
Spill Resistant
No
Keyboard Features
ZMK/VIA/Hot Swap/Brown Switch,2.4GHZ/BT /8k Wired
Foldable
No
Keycap Material
PBT
Maximum Number of Memory Profiles
256
Form Factor
Full-size
Number Of Keys
108
Keyboard Technology
Mechanical
Dedicated Macro Keys
No
Adjustable Tilt Function
Yes
Number Of Programmable Macros
16
Key Switch Behavior
Linear
Rollover
Full-key
Multimedia Keys
Yes
Internet Keys
Yes
Number Of Programmable Keys
108
Wireless Connectivity
Radio Frequency (RF - 2.4 Ghz/Low Latency)
Maximum Wireless Range
10 feet
Wired Connectivity
USB-C
Cable Length
1.2 feet
Detachable Cable
Yes
Number Of USB Port(s)
1
Number of Devices Connectable Simultaneously
3
Operating System Compatibility
Windows
Plug and Play Operation
Yes
On/Off Switch
Yes
UPC
4894979058157

Power & warranty

Model Number
K5U-H1
Warranty - Parts
1 year limited
Warranty - Labor
1 year limited

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
CHRISTIANKOct 23, 2026 · Verified purchase ★★★★★

Nice and thocky - Wonderful Keeb. Sounds nice, and I like the feedback.

TREVORWOct 9, 2026 · Verified purchase ★★★★★

Sleek. Neat. Feels Fancy. - Exactly as the title says! Battery is an absolute trooper if you decide to use it wirelessly, too. Has a cool knob up top for adjusting the volume! Two thumbs up!

DissapointedKeychronSep 30, 2026 · Verified purchase ★☆☆☆☆

Avoid Keychron at all costs; horrendous company - Avoid Keychron at all costs. I actually loved the K5 Ultra 8K when it worked. Unfortunately, it failed less than a week after delivery. The keyboard still powered on and worked wirelessly, but the wired USB data connection completely failed. What followed was one of the worst customer-service experiences I have ever had. I performed extensive troubleshooting at Keychron's request: factory resets, multiple cables, multiple USB ports, multiple computers, Windows and Linux testing, firmware checks, USB diagnostics, screenshots, and video evidence. Even after all of that, they continued asking me to repeat troubleshooting steps I had already completed and documented. Eventually, Keychron authorized the return. They said they could not provide a prepaid return label, required me to pay return shipping for their defective product, and promised in writing to reimburse up to $15. Then the runaround started. They told me the reimbursement would take 5–7 business days. That deadline passed. Then they told me to wait another 1–3 business days. That deadline passed. Then they told me the payment had been “successfully sent.” It had not. Then they changed the story again and told me the PayPal payment was “pending acceptance” and that I needed to claim it. Finally, they sent me a screenshot showing that they had actually sent the payment to the wrong email address, despite already having and previously confirming my correct information twice. At that point, the experience felt less like ordinary incompetence and more like being gaslighted and worn down until I would simply give up over $15. The amount is insignificant. The principle is not. Keychron required me to spend my own money returning a keyboard that failed within days, promised reimbursement, missed every deadline they gave me, told me payment had been completed when it had not, then blamed the issue on me needing to “claim” a payment that was never even sent to my account. Based on my experience, I would avoid dealing directly with Keychron at all costs. I would not recommend this product because of the reliability failure and the manufacturer support and treatment that followed.

JanHrivnakSep 26, 2026 · Verified purchase ★★★★★

Bluetooth Keyboard - It’s working great and perfect for what i needed. Connect it to ASUS ROG Xbox Ally X.

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Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat