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| GravaStar Mercury K1 | Epomaker HE75 V2 TMR | Keychron K2 Ultra |
67 Overall/ Value 66.6Build Quality 67.6Customizability 64.2Performance 65.6Productivity 66.7Portability 92.3![]() | 74 Overall/ Value 73.6Build Quality 63.3Customizability 68.9Performance 95.3Productivity 84.1Portability 91.9![]() | 93 Overall/ Value 92.9Build Quality 86.2Customizability 95.1Performance 91.2Productivity 97.6Portability 82.0![]() |
0.0 stars (0 reviews) | 0.0 stars (0 reviews) | 5.0 stars (1 reviews) |
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Name GravaStar Mercury K1 | Name Epomaker HE75 V2 TMR | Name Keychron K2 Ultra |
Release year 2024 | Release year 2026 | Release year 2026 |
Switch Options Linear | Switch Options Linear, Magnetic | Switch Options Tactile, Linear, Clicky |
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 ISO-ES, ISO-FR, ISO-IT, 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 Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless |
Polling Rate - | Polling Rate 8000 Hz | Polling Rate 8000 Hz |
Battery capacity 8000 mAh | Battery capacity 8000 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 | Backlight Rgb, South-face | Backlight Rgb, White, South-face, White South-face |
Case Colors | Case Colors | Case Colors |
Case Material Aluminum | Case Material ABS | Case Material Aluminum, ABS |
Keycaps Material - | Keycaps Material PC | Keycaps Material PBT |
Dimensions 46 x 343 x 156 mm | Dimensions 43 x 324 x 138 mm | Dimensions 31 x 312 x 122 mm |
Weight 1080g | Weight 980g | Weight 1084g |
The GravaStar Mercury K1 is a compact 75% wireless mechanical keyboard designed for users who want flexibility in connectivity and switch customization. It suits hobbyists who frequently swap switches, gamers seeking a stable and visually distinctive keyboard, and typists who prefer a linear key feel. Its hot-swappable sockets and multiple wireless options offer adaptability, while its unique design adds a visual element to the workspace.
The keyboard features an aluminum alloy exoskeleton that balances strength and lightness. Its gasket-mounted design reduces typing noise and provides a softer keypress feel. The symmetrical metal frame enhances stability, making it suitable for both intense gaming and extended typing sessions.
The linear Kailh switches have an actuation force around 40gf and a total travel distance near 3.5mm, delivering a smooth and quiet keystroke. The gasket mount helps dampen sound and vibration, improving comfort during long use. Hot-swappable sockets enable users to experiment with different switches to tailor the typing feel.
The Mercury K1 supports wired USB Type-C connection and wireless modes via 2.4 GHz and Bluetooth. This allows seamless switching between devices or use in different environments. Wireless latency and battery life details are unknown, so users prioritizing low latency or long wireless sessions should consider this.