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| Redragon BLUESIREN K654 | Keychron K4 Pro | Keychron C2 Pro |
64 Overall/ Value 63.6Build Quality 65.0Customizability 55.4Performance 62.9Productivity 63.5Portability 43.8![]() | 92 Overall/ Value 92.0Build Quality 83.8Customizability 97.2Performance 81.3Productivity 94.6Portability 53.6![]() | 91 Overall/ Value 90.7Build Quality 81.2Customizability 89.0Performance 90.1Productivity 94.3Portability 44.9 |
0.0 stars (0 reviews) | 4.7 stars (7 reviews) | 4.8 stars (11 reviews) |
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Name Redragon BLUESIREN K654 | Name Keychron K4 Pro | Name Keychron C2 Pro |
Release year 2023 | Release year 2022 | Release year 2023 |
Switch Options Clicky | Switch Options Linear, Tactile, Clicky | Switch Options Tactile, Linear, Clicky |
Profile Normal Profile | Profile Normal Profile | Profile Normal Profile |
Hot Swappable | Hot Swappable | Hot Swappable |
Layout Size 100% | Layout Size 96% | Layout Size 100% |
Layout Standard ANSI | Layout Standard ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK | Layout Standard ISO-DE, ISO-ES, ISO-FR, ISO, 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 Wired, Wired only | Connection Bluetooth, Wired, Wireless | Connection Wired, Wired only |
Polling Rate - | Polling Rate 1000 Hz | Polling Rate 8000 Hz;1000 Hz |
Battery capacity - | Battery capacity 4000 mAh | Battery capacity - |
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 Bottom Mount | Mount Style Tray Mount | Mount Style Tray 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, White, White South-face |
Case Colors | Case Colors | Case Colors |
Case Material Aluminum | Case Material Plastic, ABS | Case Material Plastic, ABS |
Keycaps Material PBT, ABS | Keycaps Material PBT, ABS | Keycaps Material PBT |
Dimensions - | Dimensions 31 x 391 x 139 mm | Dimensions 28 x 130 x 436 mm |
Weight 1390g | Weight 1280g | Weight 975g |
The Redragon BLUESIREN K654 is a wired mechanical keyboard suited for users who want a durable build with quiet, smooth keystrokes and customizable lighting. It fits gamers and office users who prefer linear red switches and want the flexibility to swap switches without soldering. Its distinct two-tone keycaps and dual-zone RGB lighting appeal to those who value visual customization alongside functionality.
This keyboard features an all-aluminum frame, providing a solid and heavy base that enhances stability during use. The robust construction supports long-term durability, making it suitable for frequent, intense typing or gaming sessions.
Equipped with linear red switches, the K654 offers quiet and smooth key presses with minimal resistance, ideal for users seeking a subdued typing sound. Thick sound-absorbing foam reduces noise further, making it less disruptive in shared spaces. The hot-swappable design allows users to replace switches easily, enabling customization of typing feel without replacing the entire keyboard.
The keyboard features a unique gradient keycap design with white and blue tones that highlight the RGB lighting. Its dual lighting zones, including keys and an outer ring, can be controlled independently. Users can adjust colors, effects, and speed via software or onboard shortcuts. Macro programming is also supported for personalized workflows.