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RX S75  Crystal White Tri-mode mechanical keyboard

Yunzii RX S75 Mechanical Keyboard

The Yunzii RX S75 Crystal is a compact 81-key mechanical keyboard designed for users who want flexible connectivity and easy switch customization. It suits hobbyists who like to swap switches without soldering and those needing both wired and wireless options. Its clear acrylic case and white or RGB backlighting offer a visible, customizable typing environment. This keyboard fits users looking for a balance between portability and functionality in a mid-sized layout.</p... Read more
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RX S75 Crystal White Tri-mode mechanical keyboard

Yunzii
Yunzii
Ships to US
$119

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Compare Yunzii RX S75 vs Keychron K2 HE vs WOBKEY Rainy75 Pro Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Yunzii RX S75Keychron K2 HEWOBKEY Rainy75 Pro
RX S75  Crystal White Tri-mode mechanical keyboard
99
Keychron K2 HE Wireless Magnetic Switch Custom Keyboard
94
WOBKEY Rainy 75 Pro Keyboard
0.0 (0)
4.6 (69)
5.0 (34)
  • Has Clicky switch options
  • Built with the ANSI layout standard
  • Supports Wired, Wireless connectivity
  • Equipped with a 5000 mAh battery
  • Made with a Acrylic case
  • Offers Yes, Rgb, White RGB lighting
  • Has Linear, Magnetic switch options
  • Built with the ANSI, ISO, ISO-UK, ISO-DE, ISO-ES, ISO-FR, ISO-CH, ISO-Nordic, JIS layout standard
  • Comes with a knob
  • Provides dedicated media keys
  • Utilizes Hall effect sensors
  • Enables rapid trigger functionality
  • Uses a Tray Mount mounting style
  • Equipped with a 4000 mAh battery
  • Weighs about 1743 g
  • Sized at 30 x 127 x 41 mm
  • Made with a Aluminum, Wood, ABS, Resin case
  • Features PBT, ABS, PC keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face, White, White North-face RGB lighting
  • Released in 2025
  • Has Linear switch options
  • Built with the ANSI, ISO-DE, ISO layout standard
  • Uses a Gasket Mount mounting style
  • Equipped with a 7000 mAh battery
  • Weighs about 1800 g
  • Sized at 30 x 320 x 150 mm
  • Made with a Aluminum, Steel case
  • Features PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Scores
  • Performance: 66.2
  • Build Quality: 49.2
  • Productivity: 57.2
  • Customizability: 64
  • Portability: 79.2
Scores
  • Performance: 93.3
  • Build Quality: 90.8
  • Productivity: 96.9
  • Customizability: 99.6
  • Portability: 81.3
Scores
  • Performance: 79.9
  • Build Quality: 88
  • Productivity: 93.9
  • Customizability: 89.6
  • Portability: 91.7
Name
Yunzii RX S75
Name
Keychron K2 HE
Name
WOBKEY Rainy75 Pro
Release year
2024
Release year
2024
Release year
2025
Switch Options
Clicky
Switch Options
Linear, Magnetic
Switch Options
Linear
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ANSI, ISO, ISO-UK, ISO-DE, ISO-ES, ISO-FR, ISO-CH, ISO-Nordic, JIS
Layout Standard
ANSI, ISO-DE, ISO
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
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
5000 mAh
Battery capacity
4000 mAh
Battery capacity
7000 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
Tray Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White
Backlight
 
Rgb, North-face, White
Backlight
 
Rgb, South-face
Case Colors
Case Colors
Case Colors
Case Material
Acrylic
Case Material
Aluminum, Wood, ABS, Resin
Case Material
Aluminum, Steel
Keycaps Material
-
Keycaps Material
PBT, ABS, PC
Keycaps Material
PBT
Dimensions
-
Dimensions
30 x 127 x 41 mm
Dimensions
30 x 320 x 150 mm
Weight
-
Weight
1743g
Weight
1800g
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Product Description

The Yunzii RX S75 Crystal is a compact 81-key mechanical keyboard designed for users who want flexible connectivity and easy switch customization. It suits hobbyists who like to swap switches without soldering and those needing both wired and wireless options. Its clear acrylic case and white or RGB backlighting offer a visible, customizable typing environment. This keyboard fits users looking for a balance between portability and functionality in a mid-sized layout.

Key Features

  • Hot-swappable RX switches allow users to change switch types without tools, supporting personalized typing feel and sound.
  • Tri-mode connectivity offers wired and wireless use, enabling seamless switching between devices or setups.
  • White or RGB backlighting enhances key visibility in different lighting conditions and supports basic lighting customization.
  • Large 5000mAh battery supports wireless use, reducing interruptions for mobile or clutter-free workspaces.

Build Quality

  • Acrylic case provides a lightweight, transparent design that shows internal components and lighting effects.
  • Compact 81-key layout saves desk space while retaining essential keys for productivity and gaming.

Connectivity

  • Supports wired USB connection for stable, low-latency use, suitable for gaming or heavy typing sessions.
  • Wireless mode adds convenience for mobile use or reducing cable clutter, compatible with Windows and macOS.

Trade-offs

  • Acrylic material may be less durable and more prone to scratches compared to metal or thicker plastic cases.
  • Unknown firmware or keymapping customization limits advanced remapping or macro programming options.
  • Battery life details are unspecified, so wireless usage duration is unclear.

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