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| Coolkiller CK75 SE | Jamesdonkey A3 3.0 | Keydous NJ81 |
70 Overall/ Value 69.9Build Quality 66.9Customizability 67.5Performance 75.5Productivity 76.9Portability 80.1![]() | 71 Overall/ Value 71.1Build Quality 60.1Customizability 82.0Performance 53.6Productivity 80.3Portability 75.5![]() | 64 Overall/ Value 64.3Build Quality 54.7Customizability 78.5Performance 48.5Productivity 65.3Portability 79.9![]() |
0.0 stars (0 reviews) | 0.0 stars (0 reviews) | 0.0 stars (0 reviews) |
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Name Coolkiller CK75 SE | Name Jamesdonkey A3 3.0 | Name Keydous NJ81 |
Release year 2026 | Release year 2024 | Release year 2022 |
Switch Options - | Switch Options - | Switch Options Clicky, 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 | Layout Standard ANSI |
Layout Ergonomics Normal | Layout Ergonomics Normal | Layout Ergonomics Normal |
Knob Support | Knob Support | Knob Support |
Display Support LED | 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 Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless |
Polling Rate 1000 Hz | Polling Rate - | Polling Rate - |
Battery capacity 4000 mAh | Battery capacity 3750 mAh | Battery capacity 4000 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 | Backlight Rgb |
Case Colors | Case Colors | Case Colors |
Case Material Plastic | Case Material - | Case Material Plastic |
Keycaps Material PBT, PC | Keycaps Material PBT | Keycaps Material PBT |
Dimensions 40 x 326 x 139 mm | Dimensions 42 x 148 x 329 mm | Dimensions 36 x 134 x 315 mm |
Weight 1000g | Weight - | Weight 970g |
The Coolkiller CK75 SE cannot be confidently matched to a particular typing style from the available information. No product details are provided beyond its name, so its layout, switches, construction, connectivity, and customization options are unknown. It may suit a buyer who is willing to verify those details before choosing, but there is not enough evidence to recommend it specifically for gaming, office use, or keyboard modification.
Check whether the layout and key arrangement fit your desk and typing habits. Confirm the switch type and whether switches can be replaced, since these affect typing feel and the ability to customize. Case material, mounting style, and acoustic details are also unknown, so the board’s feel and sound cannot be assessed here.
Wired or wireless options, operating-system support, and key-remapping features are unknown. Confirm these if you need a particular connection method, use multiple devices, or rely on custom key assignments.
Potential advantage: the available information makes no unsupported claims, leaving room to judge the board against confirmed details.
Main drawback: there is no verified feature information to establish whether it offers the layout, feel, or functions you need.