GravaStar - Mercury K98 Pro Phantom Black - Wireless Mechanical Keyboard
Mercury K98 Pro
Premium 98% Layout Mechanical Gaming Keyboard with Custom GravaStar UFO Switches
One Tactical Keyboard. Every Mission.
Heavy-Duty Mechanical Feet & Premium Aluminum Chassis
Constructed with GravaStar's signature metal exoskeleton frame for structural rigidity. Heavy-duty mechanical feet offer two adjustable ergonomic angles (7.5° and 11.5°) for optimal typing and gaming posture.
Dual 8K Polling Rate & Ultra-Low Latency
Delivers a true 8000Hz polling rate in both wired USB-C and 2.4GHz wireless modes. Reduces wired latency to 0.1ms and wireless latency to 0.4ms for competitive execution.
1.65" TFT Color Display Dashboard & Control Roller
Features a 1.65" TFT display panel (142*428 OPX resolution) paired with a multifunction control knob. Adjust settings directly on screen—including language selection, polling return rate adjustments, system mode switching (Windows/macOS), battery monitoring, and custom wallpaper displays.
GravaStar Custom UFO Linear Switches
Equipped with pre-lubed GravaStar Custom UFO mechanical switches designed for a smooth feel and deep, thocky sound profile. Built with a POM cross stem, high-gloss PC top housing, PA66 bottom housing, frosted PC light guide, and a 23mm extended spring. Features 40±7 gf initial force, 1.6±0.4 mm pre-travel, 3.6±0.4 mm total travel, and a 70 million keystroke lifespan.
5-Layer Acoustic Gasket Mount Structure
A 5-layer foam-dampened gasket structure eliminates unwanted hollow noise and vibrations. Integrates an aluminum top case, dynamic RGB strip, FR4 copper-plated plate, high-rebound plate foam, IXPE switch pad, PORON slow-rebound socket foam, and a silicone dampening pad inside the bottom case.
8000mAh Dual-Battery System & Smart Auto-Sleep
Powered by a 8000mAh dual-battery system (2 x 4000mAh) delivering up to 228 hours of play in 1K wireless mode (RGB off) and up to 166 hours in 8K wireless mode (RGB off). In Bluetooth mode, enjoy up to 228 hours (RGB off) or 21 hours (RGB on), supported by Smart Auto-Sleep with instant wake-on-keystroke performance.
Driverless Web-Based Software & ARGB Customization
Fully customizable via a browser-accessible web driver platform with zero software installation required. Supports advanced key remapping, macro management, custom wallpaper uploads, 24+ custom ARGB lighting effects, and on-board profile storage.
Competitive Gaming
Flawless 8K precision paired with crisp, fluid tactile feedback.
Desk Aesthetic
A futuristic centerpiece that redefines your desk aesthetic.
Pro Productivity
Streamlined 98% layout with premium acoustics to elevate your daily workflow.
The Ultimate Gift
A hyper-functional tactical art piece, perfect for gear collectors and gamers.
Specification
| Layout | Optimized 98% Layout (98 Keys + Multifunction Control Knob) |
|---|---|
| Display Panel | 1.65" TFT Color Display Dashboard (142*428 OPX Resolution) |
| Chassis Material | Premium Glossy Aluminum Alloy Exoskeleton Frame |
| Switches | GravaStar Custom UFO Mechanical Switches (Linear, Pre-Lubed, 70M Lifespan) |
| Switch Specifications |
• Initial Force: 40±7 gf • Pre-Travel: 1.6±0.4 mm • Total Travel: 3.6±0.4 mm • Materials: POM Cross Stem, High-Gloss PC Top Housing, PA66 Bottom Housing, Frosted PC Light Guide, 23mm Extended Spring |
| Polling Rate & Latency |
• Dual 8K Polling Rate (True 8000Hz in Wired & 2.4GHz Wireless Modes) • Wired Latency: 0.1ms / Wireless Latency: 0.4ms |
| Acoustic Structure & Mount | 5-Layer Foam Dampened Gasket Mount (Aluminum Alloy Top Case, Dynamic RGB Strip, FR4 Copper-Plated Plate, High-Rebound Plate Foam, IXPE Switch Pad, PORON Slow-Rebound Socket Foam, Silicone Dampening Pad, Bottom Case) |
| Hot-Swappable | Yes (Full-Key Hot-Swappable) |
| Battery Capacity | 8000mAh Rechargeable Battery (2 x 4000mAh Dual-Battery Architecture) |
| Battery Life |
• Up to 228 Hours (1K Mode, RGB Off) • Up to 166 Hours (8K Mode, RGB Off) • ~21 Hours (Bluetooth Mode, RGB On) • Smart Auto-Sleep Mode (Instant-Wake on Keystroke) |
| RGB Lighting | 19 Built-in ARGB Backlight Effects + 4 ARGB Ambient Side-Light Modes (24+ Dynamic Lighting Modes) |
| Ergonomics | Heavy-Duty Mechanical Feet (7.5° & 11.5° Ergonomic Adjustable Angles) |
| Dimensions | 460 x 170 x 62.5 mm (18.11 x 6.69 x 2.46 in) |
| Weight | 1.55 kg (3.42 lbs) |
| Warranty | 12-Month Limited Hardware Warranty |
Compatibility
| Operating Systems | Windows / macOS |
|---|---|
| Connectivity | Tri-Mode Connection (Lag-Free 2.4GHz Wireless / Ultra-Stable Bluetooth 5.4 / High-Speed USB-C Wired) |
| Software Platform | Driverless Web-Based Driver Platform (Zero software installations required, browser-accessible) |
Package content
| In the Box | 1 x GravaStar Mercury K98 Pro Mechanical Keyboard |
|---|---|
| 1 x High-Speed 2.4GHz Wireless Receiver | |
| 1 x 1.6m Premium Type-C Braided Cable | |
| 1 x USB Type-A to Type-C Adapter | |
| 1 x Switch Puller | |
| 1 x Keycap Puller | |
| 4 x Custom GravaStar UFO Mechanical Extra Switches (Enthusiast Sample Pack) | |
| 1 x Extra Keycap Set | |
| 1 x Dedicated Cleaning Brush | |
| 1 x Microfiber Cleaning Cloth | |
| 1 x Cyber-Themed User Manual |
