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GravaStar Mercury V75 Pro specifications and in-depth review

GravaStar Mercury V75 Pro

Manufacturer: GravaStar

The GravaStar Mercury V75 Pro is a compact 75% mechanical gaming keyboard built around a combination of plastic and aluminum construction, giving it a solid foundation in a relatively portable form factor. It ships in three color options — Silver, Black, and Pink — and features RGB backlighting with an aluminum plate underneath the keycaps. The cable is detachable, and the keyboard weighs 1090 g with overall dimensions of 415 mm × 187.6 mm × 57.6 mm. Adjustable feet are included, though no wrist rest comes in the box.

At the core of the Mercury V75 Pro are GravaStar x Gateron Magnetic Jade switches, a Hall effect linear switch with an actuation force of 36 g and a variable actuation distance ranging from 0.1 mm to 3.5 mm across a total travel of 3.5 mm. These switches are hot-swappable and support analog input, rapid trigger, dual actuation, and adjustable actuation — all of which are confirmed features. The keyboard connects via USB at 8000 Hz polling rate and supports full N-key rollover. Keycaps are double-shot PBT in an OEM profile with a standard ANSI layout, and media functions are accessible through the Fn key. QMK, ZMK, and VIA are not supported. The warranty period is one year.}

Pros
  • Hall effect switches with an actuation range of 0.1 mm to 3.5 mm enable precise per-key sensitivity tuning through adjustable actuation
  • Rapid trigger and dual actuation support give users fine-grained control over keypress registration
  • Hot-swappable switches allow replacement without soldering, making maintenance straightforward
  • An 8000 Hz polling rate ensures very frequent input reporting for responsive gameplay
  • Double-shot PBT keycaps in an OEM profile offer durability and a standard typing feel
  • The detachable cable reduces wear on the connection point and simplifies storage or transport
Cons
  • No QMK, ZMK, or VIA support limits firmware-level customization options
  • Media functions require the Fn key combination rather than dedicated keys, which may interrupt workflow
  • No wrist rest is included, leaving ergonomic support to the user to source separately
  • Not designed for Mac, restricting out-of-the-box compatibility for macOS users
  • No USB passthrough means the keyboard does not add an extra port for peripheral connection
Who is this for?

This keyboard is well-suited to PC gamers who prioritize input precision, particularly those who benefit from rapid trigger and adjustable actuation down to 0.1 mm for competitive play. The 8000 Hz polling rate and full NKRO support make it a strong fit for users who demand consistent, low-latency input registration. The compact 75% layout also appeals to users with limited desk space who still want function row access, and the hot-swappable Hall effect switches make it a practical option for enthusiasts who like to experiment with switch feel without soldering.

Who is this NOT for?

Users who rely on firmware customization through QMK, ZMK, or VIA will find this keyboard limiting, as none of those platforms are supported. It is also not a natural fit for Mac users, since the keyboard is not designed with macOS key labeling or layout conventions in mind. Those who prefer a more ergonomic setup may find the lack of an included wrist rest a drawback, and users who need a dedicated media control layout or a rotary dial for quick adjustments will need to rely entirely on Fn-layer combinations instead.

General info:

Keyboard type Mechanical, Gaming
Keyboard layout size Compact (75%)
Profile Standard
connectivity Wired
connection type USB
polling rate 8000 Hz
designed for Mac ✕
has a detachable cable ✓
height 187.6 mm
width 415 mm
thickness 57.6 mm
weight 1090 g
warranty period 1 years

The GravaStar Mercury V75 Pro is a mechanical gaming keyboard in a compact 75% layout with a standard profile, connecting to a host system via USB with a detachable cable and an 8000 Hz polling rate. It is not designed for Mac. Physically, it measures 415 mm wide, 187.6 mm tall, and 57.6 mm thick, with a weight of 1090 g. The keyboard carries a one-year warranty.

Design:

has RGB lighting ✓
Has a backlit keyboard ✓
Case material Plastic, Aluminum
Plate material Aluminum
Case colors Silver, Black, Pink
has adjustable feet ✓
includes a wrist rest ✕

The keyboard features a plastic and aluminum case paired with an aluminum plate, and is available in three color options: Silver, Black, and Pink. It includes both RGB lighting and a backlit layout, along with adjustable feet for typing angle customization. No wrist rest is included in the package.

Switches:

Switch type Hall effect
Switch feel Linear
Hot-swappable switches ✓
Switch name GravaStar x Gateron Magnetic Jade Switch
Actuation distance (min) 0.1 mm
Actuation distance (max) 3.5 mm
Actuation force 36 g
Total travel distance 3.5 mm

The keyboard uses GravaStar x Gateron Magnetic Jade Switches, a Hall effect linear switch with an actuation force of 36 g and a total travel distance of 3.5 mm. The actuation point is adjustable anywhere between 0.1 mm and 3.5 mm, offering a wide range of sensitivity tuning. The switches are hot-swappable, allowing them to be replaced without soldering.

Features:

has analog input ✓
has rapid trigger ✓
has dual actuation ✓
has adjustable actuation ✓
has NKRO ✓
has USB passthrough ✕
Has a display ✕
has QMK support ✕
has ZMK support ✕
has VIA support ✕

The Mercury V75 Pro supports analog input, rapid trigger, dual actuation, and adjustable actuation, giving users considerable control over how each keypress is registered. Full N-key rollover (NKRO) is also included, ensuring simultaneous keypresses are all recognized without conflict. On the other hand, the keyboard does not feature USB passthrough, an onboard display, or support for QMK, ZMK, or VIA firmware customization.

Keys & layout:

Keyboard layout ANSI (United States)
Keycap type PBT, Double-shot
Keycap profile OEM
uses a standard key layout ✓
Media keys Via Fn key
has a rotary dial ✕

The keyboard uses an ANSI (United States) layout with a standard key arrangement and double-shot PBT keycaps in an OEM profile. Media functions are accessible via the Fn key rather than dedicated keys, and there is no rotary dial on the board.

Final Verdict

The GravaStar Mercury V75 Pro is a feature-complete Hall effect gaming keyboard aimed squarely at competitive PC users who want precise, configurable input in a compact form. Its combination of adjustable actuation, rapid trigger, and 8000 Hz polling rate gives it a technically strong profile for fast-paced gameplay, and the hot-swappable switch design adds a practical layer of long-term flexibility. The absence of QMK, ZMK, and VIA support does narrow its appeal for the customization-focused crowd, and Mac users or those seeking an ergonomic all-in-one package may find certain gaps. That said, for Windows-based gamers who prioritize responsive, tunable input in a 75% footprint, the Mercury V75 Pro delivers a well-rounded and capable package.