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| Yunzii RX S75 | Keychron K2 HE | WOBKEY Rainy75 Pro |
99 Overall/ Value 99.3Build Quality 90.8Customizability 99.6Performance 93.3Productivity 96.9Portability 81.3 | 94 Overall/ Value 93.7Build Quality 88.0Customizability 89.6Performance 79.9Productivity 93.9Portability 91.7![]() | |
0.0 stars (0 reviews) | 4.6 stars (69 reviews) | 5.0 stars (34 reviews) |
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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 |
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.