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Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection

Keychron K5 Ultra

The Keychron K5 Ultra is a slim wireless mechanical keyboard designed for users who want a low-profile typing experience with flexible connectivity and extensive customization. It suits professionals or hobbyists who value a compact 100% layout and the ability to program macros through software. Its compatibility with multiple operating systems makes it a versatile choice for mixed environments.</p... Read more
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Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard (US ANSI Layout)

Keychron (DE)
Keychron (DE)
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Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection

Keychron (DE)
Keychron (DE)
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$145
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Compare Keychron K5 Ultra vs Double shell DS102i vs Lofree Flow100 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron K5 UltraDouble shell DS102iLofree Flow100
86
Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection
Double Shell DS102i Low Profile Mechanical Keyboard
67
Flow100 Low-profile Mechanical Keyboard
5.0 (3)
0.0 (0)
0.0 (0)
  • Released in 2026
  • Has Tactile, Linear, Clicky switch options
  • Built with the ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT, ISO, ANSI layout standard
  • Comes with a knob
  • Supports QMK firmware
  • Supports VIA configuration
  • Features N-key rollover
  • Has built-in sound dampening
  • Runs at a 8000 Hz polling rate
  • Equipped with a 2600 mAh battery
  • Weighs about 566 g
  • Made with a ABS, Wood, Metal case
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Released in 2023
  • Has Tactile, Linear switch options
  • Offers Yes, Rgb RGB lighting
  • Released in 2024
  • Has Linear, Tactile switch options
  • Uses a Gasket Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 3000 mAh battery
  • Weighs about 738 g
  • Sized at 26 x 126 x 373 mm
  • Offers Yes, Rgb, White RGB lighting
Scores
  • Performance: 91.2
  • Build Quality: 75.4
  • Productivity: 92.5
  • Customizability: 90
  • Portability: 56.4
Scores
  • Performance: 46.1
  • Build Quality: 41.7
  • Productivity: 50.5
  • Customizability: 50.3
  • Portability: 48.6
Scores
  • Performance: 63.2
  • Build Quality: 66.6
  • Productivity: 65.1
  • Customizability: 60.7
  • Portability: 55.9
Name
Keychron K5 Ultra
Name
Double shell DS102i
Name
Lofree Flow100
Release year
2026
Release year
2023
Release year
2024
Switch Options
Tactile, Linear, Clicky
Switch Options
Tactile, Linear
Switch Options
Linear, Tactile
Profile
Low Profile
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
100%
Layout Size
100%
Layout Size
100%
Layout Standard
ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT, ISO, ANSI
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless
Polling Rate
8000 Hz
Polling Rate
-
Polling Rate
-
Battery capacity
2600 mAh
Battery capacity
-
Battery capacity
3000 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
-
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb
Backlight
 
Rgb, White
Case Colors
Case Colors
Case Colors
Case Material
ABS, Wood, Metal
Case Material
Aluminum
Case Material
Aluminum
Keycaps Material
PBT
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
-
Dimensions
-
Dimensions
26 x 126 x 373 mm
Weight
566g
Weight
-
Weight
738g
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Product Description

The Keychron K5 Ultra is a slim wireless mechanical keyboard designed for users who want a low-profile typing experience with flexible connectivity and extensive customization. It suits professionals or hobbyists who value a compact 100% layout and the ability to program macros through software. Its compatibility with multiple operating systems makes it a versatile choice for mixed environments.

Key Features

  • Supports 2.4 GHz wireless, Bluetooth, and wired connections, allowing seamless switching between devices and use cases.
  • Customizable key functions and macros via the Keychron Launcher web app, enabling personalized workflows on a full-size layout.
  • Powered by ZMK firmware, it offers an 8K polling rate in wireless mode, which can benefit users needing responsive input.
  • Low-profile spherical-angled (LSA) keycaps reduce finger travel and may improve typing speed and comfort.
  • ISO layout options include Spanish, French, German, Italian, and Portuguese, supporting various regional preferences.

Connectivity

The keyboard supports three connection modes: wired USB, Bluetooth, and 2.4 GHz wireless. This flexibility allows users to connect to multiple devices or switch between wired and wireless depending on their environment or battery status.

Compatibility and Customization

The K5 Ultra works with Windows, macOS, and Linux, covering most desktop operating systems. Its ZMK firmware enables advanced key remapping and macro programming through a web app, which is useful for users who want to tailor their keyboard layout without complex software installations.

Trade-offs

  • The ultra-slim design and low-profile keycaps may feel less tactile or satisfying for users accustomed to traditional mechanical switches with higher travel.
  • Battery life claims are vendor-stated; real-world endurance may vary depending on usage and connection mode.
  • Unknown details on case material and mounting style limit assessment of durability and typing acoustics.

Customer reviews

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Keychron K5 Ultra Starting at $113.99 - Best Deals