Products
Tested using Methodology v1.5.2
Updated Jun 15, 2026 02:47 PM
Tested using Methodology v1.5.2
Updated Jun 15, 2026 02:01 PM
Our Verdict
GravaStar Mercury X Pro
Razer Viper V4 Pro
The Razer Viper V4 Pro and the GravaStar Mercury X Pro are lightweight wireless gaming mice that take two very distinct directions for their shell designs. The Razer has a conventional, understated, lightweight plastic shell, while the GravaStar has a magnesium alloy exoskeleton with RGB lighting effects. Both actually have a similar shape that's suitable for a variety of hand sizes and grip types, but the GravaStar's open design could be uncomfortable depending on how you hold the mouse. Otherwise, both mice deliver outstanding raw performance that's more than suitable for competitive gaming.
Variants
- Mercury X Pro (Galaxy Black)
- Mercury X Pro (Interstellar Silver)
- Viper V4 Pro (Black)
- Viper V4 Pro (White)
Check Price
Main Differences for
Work
Threshold
Work
Full Comparison
Style
Style Picture
Type
Coating
Lighting Color
Shape
3D Model
Length
Width
Height
Grip Width
Ambidextrous
Left-Handed Friendly
Finger Rest
Build Quality
Build quality picture
Weight
Minimum Weight Picture
Lowest Weight
Default Weight
Weight Distribution
Extra Weights
Hand Size Recommendation
Palm Grip Hand Recommendation
Claw Grip Hand Recommendation
Fingertip Grip Hand Recommendation
Wireless Versatility
Maximum Of Paired Devices
Bluetooth
Receiver
Battery Type
Use When Charging
On/Off Activation
Receiver Extender
Receiver Storing
Battery Indicator
Cable
Connectivity
Cable Length
Cable Type
Permanent Kink
Port Type: Mouse End
Port Type: PC End
Mouse Feet
Mouse Feet picture
Gliding Experience
Material
Extra Included
In The Box
In the box picture
Main Button
Actuation Graph
Force/Distances Graph
Switch Type
Switch Model
Additional Buttons
Buttons Picture
Total Number Of Buttons
Number Of Side Buttons
Number Of Programmable Inputs
Profile Switching Button
Gesture Support
Click Latency
Latency Data
Expected Connection
Wired
Receiver
Bluetooth
CPI
CPI Graph
SRAV Close-Up
SRAV @ 1600 CPI
SRAV @ 800 CPI
SRAV @ 400 CPI
SRAV @ Fixed CPI
Precision Error Between Speeds
Precision Error Between CPI
Worst Tracking Error
Minimum CPI
Maximum CPI
CPI Adjustment Steps
Sensor Latency
Sensor Latency Transition Graph
Delay At Half Movement
Sensor Specifications
Sensor Technology
Sensor Model
Works On Glass
Minimum Lift Off Distance
Maximum Polling Rate
Mouse Wheel
Mouse wheel picture
Scroll Wheel Type
Scroll Wheel Tilt
Thumb Wheel Type
Noise
Noise Video
Click Noise
Configuration Software
Software Tour
GravaStar Mercury X Pro
Razer Viper V4 Pro
Comments
GravaStar Mercury X Pro vs Razer Viper V4 Pro: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Members have direct access to buying advice on our member forum.