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| Jamesdonkey RS2 V2 | Keychron K4 Pro | Yunzii B98 PRO |
72 Overall/ Value 71.9Build Quality 55.4Customizability 83.2Performance 63.6Productivity 85.2Portability 54.7![]() | 92 Overall/ Value 92.2Build Quality 83.9Customizability 97.3Performance 81.4Productivity 94.7Portability 53.6![]() | 85 Overall/ Value 85.1Build Quality 80.3Customizability 92.5Performance 83.7Productivity 73.7Portability 59.3![]() |
0.0 stars (0 reviews) | 4.7 stars (7 reviews) | 0.0 stars (0 reviews) |
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Name Jamesdonkey RS2 V2 | Name Keychron K4 Pro | Name Yunzii B98 PRO |
Release year 2022 | Release year 2022 | Release year 2026 |
Switch Options Clicky | Switch Options Linear, Tactile, Clicky | Switch Options Linear |
Profile Normal Profile | Profile Normal Profile | Profile Normal Profile |
Hot Swappable | Hot Swappable | Hot Swappable |
Layout Size 96% | Layout Size 96% | Layout Size 96% |
Layout Standard ANSI | Layout Standard ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK | Layout Standard ANSI |
Layout Ergonomics Normal | Layout Ergonomics Normal | Layout Ergonomics Normal |
Knob Support | Knob Support | Knob Support |
Display Support | Display Support | Display Support OLED |
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, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless |
Polling Rate - | Polling Rate 1000 Hz | Polling Rate 1000 Hz |
Battery capacity 3000 mAh | Battery capacity 4000 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 Tray Mount | Mount Style Gasket Mount |
Screw in Stabilizers | Screw in Stabilizers | Screw in Stabilizers |
Sound Dampening | Sound Dampening | Sound Dampening |
Backlight Rgb | Backlight Rgb, White, South-face, White South-face | Backlight Rgb, South-face |
Case Colors | Case Colors | Case Colors |
Case Material ABS, Plastic | Case Material Plastic, ABS | Case Material Plastic |
Keycaps Material PBT | Keycaps Material PBT, ABS | Keycaps Material PBT |
Dimensions - | Dimensions 31 x 391 x 139 mm | Dimensions 49 x 414 x 142 mm |
Weight 950g | Weight 1280g | Weight 1161g |
The Jamesdonkey RS2 Rosy is a 99-key mechanical keyboard designed for users who want a versatile typing experience with multiple connectivity options and easy switch customization. It suits hobbyists who like to swap switches without soldering, and users needing a compact layout with multimedia controls. Its triple connectivity and Mac/Windows support make it flexible for different setups.