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Nacon GM-420 specifications and in-depth review

Nacon GM-420

Manufacturer: Nacon

The Nacon GM-420 is a wired gaming mouse built for right-handed users, connecting via USB with a generously long 1.8m cable. It features RGB lighting and a fairly substantial build, weighing 150g and measuring 122mm in height and 70mm in width. With 6 fully programmable buttons — including 3 side buttons — it offers a solid layout for users who want custom controls within reach during gameplay.

On the performance side, the GM-420 is equipped with an optical sensor covering a DPI range from 800 to 12000, with on-the-fly adjustability via a dedicated DPI switching button. It operates at a 1000Hz polling rate, ensuring responsive cursor tracking. There is no onboard memory for profile storage, and no profile switching button is present on the device. The mouse also comes with a 2-year warranty, though it does not include gesture support, extra weights, or a tilting scroll wheel.

Pros
  • A DPI range of 800 to 12000 with on-the-fly switching via a dedicated button gives users direct control over tracking sensitivity during use
  • The 1000Hz polling rate ensures the cursor position is updated consistently and responsively
  • All 6 buttons are programmable, including 3 side buttons, offering a well-rounded layout for customizable gaming inputs
  • RGB lighting is built in, adding visual customization to the design
  • The 1.8m cable provides generous length for flexible desk placement
  • A 2-year warranty offers a reasonable period of manufacturer coverage
Cons
  • At 150g, the mouse sits on the heavier side, which may cause fatigue during long gaming sessions
  • There is no onboard memory, so custom button configurations cannot be saved directly to the device
  • No profile switching button is present, meaning users cannot cycle between profiles on the fly
  • The mouse is designed exclusively for right-handed users, making it unusable for left-handed individuals
  • No wireless connectivity is available, as the mouse relies solely on a USB wired connection
  • Extra weights are not included, so the weight cannot be adjusted to suit individual preferences
Who is this for?

The Nacon GM-420 is well-suited for right-handed gamers who want a capable wired mouse with a wide sensitivity range and hands-on control. The DPI range from 800 to 12000 with a dedicated switching button makes it a practical choice for users who regularly shift between different tasks or game types requiring varied tracking speeds. The 1000Hz polling rate supports consistently responsive cursor tracking, and the fully programmable 6-button layout — including 3 side buttons — gives users meaningful customization options without relying on complex software during a session. The included 2-year warranty also adds a layer of confidence for buyers looking for longer-term reliability.

Who is this NOT for?

Users who prefer working without cables or need the flexibility of a wireless setup will find the GM-420 unsuitable, as it is limited to a USB wired connection only. At 150g with no option to adjust the weight, the mouse may feel uncomfortably heavy for users who prefer lighter hardware during extended sessions or fast-paced gameplay. Additionally, those who rely on onboard memory and profile switching for storing and swapping custom configurations directly on the device will be limited, as neither feature is available. Left-handed users are also excluded entirely by the right-handed-only design.

Performance:

polling rate 1000 Hz
maximum DPI 12000 DPI
minimum DPI 800 DPI
has adjustable DPI ✓

The Nacon GM-420 uses an optical sensor with a DPI range spanning from 800 to 12000, and sensitivity is fully adjustable, allowing users to tune tracking speed to their preference. It operates at a 1000Hz polling rate, meaning cursor position is reported to the system 1000 times per second for responsive and consistent tracking during use.

General info:

Type Gaming
connection type USB
sensor Optical Sensor
onboard memory profiles 0
has gesture support ✕
warranty period 2 years

The Nacon GM-420 is a USB-connected gaming mouse built around an optical sensor, designed specifically for gaming use. It does not support gesture input, and there is no onboard memory available for storing configuration profiles on the device itself. The mouse comes with a 2-year warranty, offering a reasonable period of manufacturer coverage.

Buttons:

number of buttons 6
number of side buttons 3
number of programmable buttons 6
has a DPI switching button ✓
has a profile switching button ✕

The Nacon GM-420 has 6 buttons in total, all of which are programmable, giving users the ability to assign custom functions to every input on the mouse. Among these, 3 are side buttons, providing convenient thumb-accessible controls during gameplay. A dedicated DPI switching button is included for on-the-fly sensitivity adjustments, though there is no profile switching button available on the device.

Design:

Orientation Right-handed
weight 150 g
has RGB lighting ✓
has a tilting scroll wheel ✕
has a thumb scroll wheel ✕
has extra weights ✕
cable length 1.8 m
volume 358.68 cm³
thickness 42 mm
height 122 mm
width 70 mm

The Nacon GM-420 is shaped for right-handed use and carries a weight of 150g, with dimensions of 122mm in height, 70mm in width, and 42mm in thickness, giving it a fairly substantial feel in hand. It features RGB lighting and comes with a 1.8m cable, providing ample reach for most desk setups. The mouse does not include a tilting scroll wheel, a thumb scroll wheel, or adjustable extra weights, and no additional weight inserts are provided in the package.

Final Verdict

The Nacon GM-420 is a straightforward wired gaming mouse that delivers where it counts for right-handed users who value tracking range and button customization. Its wide DPI range with on-the-fly switching and a 1000Hz polling rate form a solid performance foundation, and the fully programmable 6-button layout adds practical flexibility for gaming scenarios. That said, the heavier build, absence of wireless connectivity, and lack of onboard memory storage mean it caters to a fairly specific user profile. For right-handed gamers who are comfortable with a wired setup and want reliable, customizable performance backed by a 2-year warranty, the GM-420 presents a focused and dependable option.