GravaStar
GravaStar Mercury K98 Pro Wireless Mechanical Gaming Keyboard
An enthusiast-grade 98-key board with true 8000Hz polling, factory-lubed UFO linear switches, and a creamy gasket-mounted thock right out of the box
$259.95*
View on Amazon
✓ In Stock on Amazon.com
*Price sourced from Amazon.com. Last updated:Aug 18, 2026.Price and availability are subject to change — details.
Affiliate Disclosure: As an Amazon Associate, Studio Supplies earns from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.
Notice a mistake? Let Us Know
Overview
Key Features
DUAL 8K TRI-MODE CONNECTIVITY — Connect via lag-free 2.4GHz wireless, ultra-stable Bluetooth 5.4, or high-speed USB-C wired. Wired and 2.4GHz modes both support true 8000Hz polling for a 0.125ms polling interval, delivering fast, precise input for competitive gaming and everyday use.
CUSTOM UFO LINEAR SWITCHES & 5-LAYER GASKET MOUNT — GravaStar Custom UFO mechanical switches are factory pre-lubed for smooth, consistent keystrokes and rated for 70 million presses. The 5-layer dampened gasket structure combines Poron case foam, IXPE switch pad, PET film, and slow-rebound Poron to reduce unwanted resonance and create a deep, creamy "thock" sound straight out of the box.
19 ARGB EFFECTS & 4 AMBIENT SIDE-LIGHT MODES — Choose from 19 built-in ARGB backlight effects and 4 ambient side-light modes. Customize lighting directly through the web-based driver to match your gaming setup, workspace, or personal style.
1.65" TFT SMART DISPLAY & MULTIFUNCTION KNOB — The 142 × 428 TFT color display provides at-a-glance access to system information, keystroke data, and custom animations. The multifunction control knob provides convenient control for volume, scrolling, and other assigned functions without interrupting your workflow.
UP TO 228 HOURS OF WIRELESS USE — Enjoy up to 228 hours of use in 1K mode with RGB off, or up to 166 hours in 8K mode with RGB off. The web-based driver requires no software installation and lets you remap keys, program macros, and customize RGB settings. Compatible with Windows and macOS.
Specifications
Brand
GravaStar
Model
Mercury K98 Pro
Layout
98 keys
Connectivity
2.4GHz wireless, Bluetooth 5.4, USB-C wired
Polling Rate
Up to 8000Hz (0.125ms) on wired and 2.4GHz
Switches
GravaStar Custom UFO linear, factory pre-lubed
Switch Lifespan
70 million presses
Mounting
5-layer dampened gasket structure
Display
1.65" TFT color (142 x 428)
Controls
Multifunction knob
Lighting
19 ARGB effects, 4 ambient side-light modes
Battery Life
Up to 228 hours (1K mode, RGB off)
Compatibility
Windows and macOS
Frequently Asked Questions
Does the Mercury K98 Pro actually reach 8000Hz polling wirelessly, or only when wired?
Both. GravaStar states the wired and 2.4GHz modes both support true 8000Hz polling for a 0.125ms interval. Bluetooth 5.4 is offered as a third mode for convenience rather than peak polling.
How long does the battery really last on the K98 Pro?
Up to 228 hours in 1K mode with RGB off, or up to 166 hours in 8K mode with RGB off. Enabling lighting and higher polling will reduce those figures.
Do the switches need lubing or modding to sound good?
No. The GravaStar Custom UFO linear switches come factory pre-lubed, and the 5-layer gasket mount is designed to produce a deep thock straight out of the box without aftermarket work.
What is the TFT display and knob actually used for?
The 1.65-inch TFT color display shows system information, keystroke data, and custom animations, while the multifunction knob controls volume, scrolling, and other functions you assign.
Does customizing the keyboard require installing software?
No. The K98 Pro uses a web-based driver that requires no installation and lets you remap keys, program macros, and adjust RGB on both Windows and macOS.
Will the 98-key layout work for someone who needs a number pad?
Yes. The 98-key layout retains a number pad in a more compact arrangement than a full-size board, trading some spacing for a smaller desk footprint.
Related Products
