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| Coolkiller Spring Series | Velocifire/GDK Lab KV1 65 | Mxrskey CK650 |
69 Overall/ Value 69.4Build Quality 75.3Customizability 60.8Performance 44.0Productivity 53.4Portability 65.7![]() | 67 Overall/ Value 67.4Build Quality 72.0Customizability 82.0Performance 56.8Productivity 86.6Portability 94.2![]() | |
0.0 stars (0 reviews) | 0.0 stars (0 reviews) | 0.0 stars (0 reviews) |
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Name Coolkiller Spring Series | Name Velocifire/GDK Lab KV1 65 | Name Mxrskey CK650 |
Release year 2023 | Release year 2026 | Release year 2023 |
Switch Options Linear | Switch Options - | Switch Options - |
Profile Normal Profile | Profile Normal Profile | Profile Normal Profile |
Hot Swappable | Hot Swappable | Hot Swappable |
Layout Size 65% | Layout Size 65% | Layout Size 65% |
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 | Display Support LED | 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 Wired, Wired only | Connection Bluetooth, 2.4 GHz, Wired, Wireless |
Polling Rate - | Polling Rate 1000 Hz | Polling Rate - |
Battery capacity 3750 mAh | Battery capacity - | 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 Gasket Mount | Mount Style Gasket Mount |
Screw in Stabilizers | Screw in Stabilizers | Screw in Stabilizers |
Sound Dampening | Sound Dampening | Sound Dampening |
Backlight Rgb | Backlight | Backlight Rgb, South-face |
Case Colors | Case Colors | Case Colors |
Case Material Plastic | Case Material Aluminum | Case Material Aluminum |
Keycaps Material PBT | Keycaps Material - | Keycaps Material - |
Dimensions 28 x 329 x 145 mm | Dimensions - | Dimensions 30 x 346 x 105 mm |
Weight 1500g | Weight - | Weight 950g |
The Coolkiller Spring Series is a mechanical keyboard line suited for users who want flexible connectivity and switch customization in compact to near-full-size layouts. It fits hobbyists who swap switches, users needing wireless and wired options, and those who prefer a distinctive, themed design. The series offers three layouts, each with features that support both productivity and casual use.