The Logitech G604 LIGHTSPEED is quite versatile and performs well for a wide range of uses. It's designed for MMO gaming and has a low click latency. It has amazing overall performance, but its shape and features are also well-suited for the office. It has plenty of programmable buttons and is a nice overall improvement over the Logitech G602. However, its long shape may not be suitable for people with smaller hands.
Our Verdict
The Logitech G604 LIGHTSPEED is excellent for the office. This mouse feels very comfortable, especially when using a palm grip. However, people with smaller hands might have trouble reaching all the buttons due to its long shape. On the upside, it has plenty of programmable inputs and you can even unlock the wheel for infinite scrolling, which is very useful in long documents.
- Feels very well-built and amazingly comfortable.
- Excellent performance and easily customizable.
- Connects via Bluetooth or USB receiver.
- Wireless design makes it easier to use in tight spaces.
- Fully compatible with both Windows and macOS.
- Likely too bulky for most laptop cases and bags.
- Not recommended for small hands with any grip type.
The Logitech G604 LIGHTSPEED is decent for FPS games. While the wireless click latency is low, the mouse is quite heavy and isn't ideal for very quick flick shots. It's also not recommended for a fingertip grip. On the upside, it's very comfortable, its performance is excellent, and you can easily customize it to your preference inside the dedicated software.
- Low click latency.
- Feels very well-built and amazingly comfortable.
- Excellent performance and easily customizable.
- Wireless design makes it easier to use in tight spaces.
- Fully compatible with both Windows and macOS.
- Very heavy.
- Can’t be used wired.
- Likely too bulky for most laptop cases and bags.
- Not recommended for small hands with any grip type.
The Logitech G604 LIGHTSPEED is amazing for MMO games. This mouse has plenty of programmable buttons, and you can also set a G-Shift button that triggers another set of commands for as long as you hold it, giving you even more options. Also, its click latency is low. Unfortunately, its body is a bit long, making it hard to use with a fingertip grip or if you have small hands.
- Feels very well-built and amazingly comfortable.
- Outstanding software with many customization options.
- Excellent performance.
- Wireless design makes it easier to use in tight spaces.
- Fully compatible with both Windows and macOS.
- Can’t be used wired.
- Six side buttons isn't as many as most dedicated MMO mice.
- Likely too bulky for most laptop cases and bags.
- Not recommended for small hands with any grip type.
- Wireless design makes it easier to use in tight spaces.
- Fully compatible with both Windows and macOS.
- Likely too bulky for most laptop cases and bags.
Changelog
- Updated Mar 10, 2026: We've converted this review to Test Bench 1.5.2. This update removes the Delay To Start Of Movement and Delay To End Of Movement measurements from the Sensor Latency test. See our full 1.5.2 changelog for details.
- Updated Aug 19, 2025: We've converted this review to Test Bench 1.5.1. This update removes less relevant or redundant elements, including several videos. We've also adjusted our Sensor Latency testing, resulting in minor score changes. See our full 1.5.1 changelog for details.
- Updated Jan 05, 2024: We've updated the CPI graph displayed in the Sensor Latency section of this review. Our results remain the same, but these graphs have two new columns with results from the Delay At Half Movement and Delay To End Of Movement tests.
- Updated Nov 24, 2023: We've converted this review to Test Bench 1.5. This update adds a new Main Button test group, which provides button actuation data and switch information. We've also made minor changes to how we calculate the Office usage score. For more details, you can see our full changelog here.
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Differences Between Sizes And Variants
This mouse only comes in black and there are no other variants.
Popular Mouse Comparisons
The Logitech G604 LIGHTSPEED is an amazing and quite versatile mouse that stands out thanks to its comfortable design and impressive performance. It’s one of the few mice that we’ve tested that have both a very wide CPI range and amazing consistency. However, it’s rather bulky and heavy compared to many other gaming mice, and the buttons can feel a bit hard to press. On the plus side, unlike many other manufacturers, Logitech's companion software is compatible with both Windows and macOS, which is great. For more options, see our recommendations for the best gaming mouse, the best wireless gaming mouse, and the best mouse for MMOs. If you're interested in Logitech products, also check out the best Logitech mice.
Overall, the Logitech G604 LIGHTSPEED is better than the Logitech G703 LIGHTSPEED with HERO Sensor. However, they're very different mice. The G604 is much heavier, and it has a lot more buttons, making it more suitable for MMO games. It also has a scroll wheel that supports tilt inputs and can be unlocked for infinite scrolling. On the other hand, the G703 is lighter and has weight optimization, and it can be used wired or wirelessly.
The wireless Logitech G604 LIGHTSPEED is a better mouse than the wired Logitech G502 HERO, but the G502 is better for gaming. The G604 has more side buttons and is very comfortable to use, while on the other hand, the G502 is slightly better built and features RGB lighting.
The Logitech G604 LIGHTSPEED is a better mouse than its previous version, the Logitech G602. It has overall better performance and is slightly more comfortable to use.
While the G604 uses a single AA battery, the G602 can run on either one o
r two AA batteries.
You can also unlock the scroll wheel on the G604 for infinite scrolling.
The Logitech G604 LIGHTSPEED and the Logitech G502 LIGHTSPEED are both good, versatile mice with the same sensor and a similar ergonomic design with a thumb rest. The G604 is a wireless-only mouse that supports Bluetooth. It has more buttons and programmable inputs. On the other hand, the G502 weighs less and can be used wired or wirelessly, though it doesn't support Bluetooth.
Test Results
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