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YUNZII CK98 Wireless Hot Swappable OLED Mechanical Keyboard-Math

Yunzii CK98 Mechanical Keyboard

The Yunzii CK98 OLED Math is a 98-key mechanical keyboard suited for users who want a versatile wireless or wired connection, customizable OLED display, and hot-swappable switches. It fits hobbyists who like to modify their keyboard’s look and feel, and professionals who appreciate a compact layout with advanced features like system monitoring on the keyboard itself.</p... Read more
Compare prices from $80.00 to $109
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YUNZII CK98 Wireless Hot Swappable OLED Mechanical Keyboard-Math

Yunzii
Yunzii
Ships to US
$80

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Compare Yunzii CK98 vs Yunzii IF99 vs Epomaker QK108 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Yunzii CK98Yunzii IF99Epomaker QK108
69
YUNZII CK98 Wireless Hot Swappable OLED Mechanical Keyboard-Math
86
YUNZII IF99 QMK/VIA Full Size LCD Mechanical Keyboard
84
EPOMAKER QK108
0.0 (0)
0.0 (0)
3.7 (6)
  • Released in 2023
  • Available in a 98% layout
  • Includes a Yes, OLED display
  • Equipped with a 3750 mAh battery
  • Made with a Acrylic case
  • Features PC keycaps
  • Has Linear switch options
  • Available in a 95% layout
  • Includes a Yes display
  • Supports QMK firmware
  • Weighs about 1238.5 g
  • Sized at 46 x 385 x 143 mm
  • Has Linear, Tactile, Silent switch options
  • Available in a 100% layout
  • Comes with a knob
  • Includes a Yes, LED display
  • Weighs about 1180 g
  • Sized at 43 x 439 x 139 mm
  • Made with a ABS case
Scores
  • Performance: 63.6
  • Build Quality: 67.5
  • Productivity: 67.7
  • Customizability: 70.4
  • Portability: 51
Scores
  • Performance: 81.9
  • Build Quality: 80.1
  • Productivity: 89
  • Customizability: 89.7
  • Portability: 63.1
Scores
  • Performance: 80.8
  • Build Quality: 75.3
  • Productivity: 88.4
  • Customizability: 82.1
  • Portability: 62.1
Name
Yunzii CK98
Name
Yunzii IF99
Name
Epomaker QK108
Release year
2023
Release year
2025
Release year
2025
Switch Options
-
Switch Options
Linear
Switch Options
Linear, Tactile, Silent
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
98%
Layout Size
95%
Layout Size
100%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
OLED
Display Support
 
Display Support
 
LED
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, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
3750 mAh
Battery capacity
8000 mAh
Battery capacity
8000 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
Gasket Mount
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face
Backlight
 
Rgb, South-face
Backlight
 
Rgb, South-face
Case Colors
Case Colors
Case Colors
Case Material
Acrylic
Case Material
-
Case Material
ABS
Keycaps Material
PC
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
-
Dimensions
46 x 385 x 143 mm
Dimensions
43 x 439 x 139 mm
Weight
-
Weight
1238.5g
Weight
1180g
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Product Description

The Yunzii CK98 OLED Math is a 98-key mechanical keyboard suited for users who want a versatile wireless or wired connection, customizable OLED display, and hot-swappable switches. It fits hobbyists who like to modify their keyboard’s look and feel, and professionals who appreciate a compact layout with advanced features like system monitoring on the keyboard itself.

Key Features

  • Customizable OLED screen displays system info such as CPU/GPU usage, temperature, and time, plus user-uploaded images or GIFs for personalization.
  • Supports three connection modes: wired USB-C, Bluetooth 5.1, and 2.4GHz wireless, allowing flexible device pairing.
  • Hot-swappable switch sockets accept both 3-pin and 5-pin mechanical switches, enabling easy switch replacement without soldering.
  • South-facing RGB backlighting offers smoother and brighter lighting effects, adjustable via key combinations or software on Windows.

Build Quality

  • Transparent acrylic case provides a solid, visually distinctive chassis.
  • Gasket-mounted design with poron foam and silicone pads reduces typing impact, resulting in a quieter and more flexible typing experience.
  • Durable, oil-resistant translucent keycaps in CSA V2 profile enhance longevity and feel.

Typing Experience

  • Gasket mounting absorbs keystroke impact, making typing smoother and less noisy compared to rigid mounts.
  • Hot-swappable switches allow users to tailor typing feel and sound without technical skills.

Connectivity

  • Triple-mode connectivity supports wired use for minimal latency and wireless options for convenience.
  • Built-in 3750mAh battery and energy-saving features extend wireless usage time, though exact battery life is unknown.
  • Includes 2.4GHz dongle and coiled cable for immediate wireless and wired use.

Compatibility

  • Software for OLED customization and RGB settings works only on Windows, limiting full feature use for macOS users.
  • Supports Windows and macOS systems for basic keyboard functions and connectivity.

Trade-offs

  • Software limitations restrict OLED and RGB customization to Windows, which may disappoint macOS users.
  • Battery life details are unspecified, so wireless endurance is uncertain.
  • Transparent acrylic case may show fingerprints and scratches more easily than opaque materials.

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