The Logitech G903 LIGHTSPEED is a great gaming mouse. It has excellent build quality and great ergonomics. It's suitable for use with either hand and you can use any grip you prefer. People with small hands, however, might find some buttons not as comfortable to reach when using the fingertip grip. This mouse has excellent overall performance with low click latency and high precision and allows for many adjustments. It's equipped with a large number of customizable buttons that you can program with the accompanying software, which is very versatile and has no compatibility issues.
Our Verdict
The Logitech G903 is a great mouse for office use. Thanks to its great ergonomics and excellent build quality, the mouse will perform well for any job you throw at it. It's suitable for any hand size, except if you have very small hands and like to use the fingertip grip.
- Very well-built design.
- Excellent performance; customizable.
- Excellent, versatile vertical wheel.
- Lacks receiver dongle storage for easier portability.
- No Bluetooth connectivity.
The Logitech G903 is a great mouse for playing FPS games. It has low click latency and offers a responsive gaming experience. It's highly customizable, offers excellent performance, and sits comfortably in your palm thanks to great ergonomics that make it suitable for any hand size. The only time you might have an issue is if you have small hands and like to use the fingertip grip.
- Low click latency.
- Very well-built design.
- Excellent performance; customizable.
- Excellent, versatile vertical wheel.
- Lacks receiver dongle storage for easier portability.
- No Bluetooth connectivity.
The Logitech G903 is an excellent mouse for MMOs. It has a large number of customizable buttons, high versatility, and low click latency for a responsive gaming experience. It has great ergonomics, suitable for any hand size, except if you favor the fingertip grip, in which case people with small hands will have a hard time reaching some of the buttons.
- Low click latency.
- Very well-built design.
- Excellent performance; customizable.
- Excellent, versatile vertical wheel.
- Lacks receiver dongle storage for easier portability.
- No Bluetooth connectivity.
- Very well-built design.
- Excellent performance; customizable.
- Excellent, versatile vertical wheel.
- Lacks receiver dongle storage for easier portability.
- No Bluetooth connectivity.
Changelog
- 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 Dec 01, 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.
- Updated Mar 01, 2023: We've converted this review to Test Bench 1.4. This update modifies our Hand Size Recommendation test, adding a more granular hand size recommendation chart. We've moved several minor tests into different test groups, removed the Travel usage, and added a new Raw Performance usage. For more details, you can see our full changelog here.
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Popular Mouse Comparisons
The Logitech G903 is an amazing wireless gaming mouse. It has excellent performance, which can be customized in the software. It has a great build quality and has a near-universal shape for all hand sizes and grips. Its latency, whether used wireless or wired, is excellent. Unfortunately, you can't use this wireless mouse via Bluetooth and will need its dedicated receiver to use it wirelessly.
See our recommendations for the best mice and the best wireless mice. If you're interested in Logitech products, also check out the best Logitech mice.
The Logitech G903 LIGHTSPEED is a better gaming mouse than the Logitech G502 HERO; it's a wireless mouse with lower click latency. The G903 feels just as well made but has an ambidextrous design and can be used in any grip by any hand size, except for fingertip grip, which may be a little too large for smaller hands.
The Logitech G502 LIGHTSPEED and the Logitech G903 LIGHTSPEED are very similar. The G502's design is a bit more ergo-shaped, thanks to the thumb rest, but its large body may not be well-suited for smaller hands. Performance-wise, it has a slightly better sensor with a wider CPI range and practically no CPI variation. It also has three side buttons, including a sniper, and two additional buttons on top of the left click, whereas the G903 only has two side buttons. That said, the G903 has an ambidextrous design that should fit most hand sizes using any grip style except for smaller hands with a fingertip grip.
Overall, the Logitech G903 LIGHTSPEED is better than the Logitech G703 LIGHTSPEED with HERO Sensor. The G903 has twice as many buttons, and you can unlock the scroll wheel for smooth scrolling and tilt inputs. Also, the G903 has a shape that fits a broader range of hand sizes and grips. However, the G703 has lower click latency and a wider CPI range.
The Logitech G Pro Wireless is a more versatile mouse than the Logitech G903 LIGHTSPEED. While they're both great for gaming with a wide, customizable CPI range and very low latency, the G Pro is quite a bit lighter. The G903 has a better cable and a much better mouse scroll wheel. Both mice are great for all hand sizes and grip styles, but small hands may have a hard time with a fingertip grip on both.
Test Results
The Logitech G903 has a sleek gamer design with an aggressive-looking front. There are two RGB zones: one for the prominently displayed logo on the back, and one that displays the battery level. Its profile is fairly low and there are many sharp edges. It has latex grips and is made of solid plastic with a mix of a glossy and matte finish.
The Logitech G903's build quality is excellent. It's made mostly of plastic with latex grips, and thanks to its sturdy construction it feels very solid. Even the removable magnetic buttons lock nicely into place and have no wobble. The only part that wobbles is the wheel lock button, which is mechanical and not electronic, but this shouldn't be an issue.
This mouse has an average weight with or without the wire. There's a 10g weight that attaches to the underside. If you want to make the mouse lighter, you can remove both the weight and its housing.
The Logitech G903 has great ergonomics. It has a symmetrical design with no preference given to right-hand or left-hand use. The customizable buttons are removable and can be placed on either side. The side with no buttons can be covered using the included plastic cover. All the grip types are comfortable for medium hands or larger. For a more ergonomic design, check out the Logitech G502 LIGHTSPEED Wireless or the smaller Logitech G403 Prodigy Wireless.
The Logitech G903 connects to your PC with only a USB dongle. The lack of Bluetooth connectivity isn't good since you're dependent on the USB receiver for your mouse to work. The battery indicator is integrated with an RGB zone.
The Logitech G903 has a very good cable that doesn't interfere with use. When the mouse is plugged in for charging, the USB receiver is no longer needed as the mouse operates through the wire and not wirelessly. There's also a receiver extension adapter included.
- G903 gaming mouse
- LIGHTSPEED™ USB receiver
- USB charging/data cable
- Accessories case
- Receiver extension adapter
- 10-gram weight
- Side buttons (2x left, 2x right)
- Button covers (1x left, 1x right)
- Manual
The Logitech G903 has an excellent set of buttons, most of which are customizable and some of which are also removable. There's also a profile switching button and a wheel lock button, but they can't be programmed to perform other tasks. If you're interested in a wireless gaming mouse with two additional side buttons on the left, check out the ASUS ROG Spatha X. Or, for a very similar mouse with modular side buttons that allow you to have one or two buttons on either side of the mouse, check out the Logitech G900 Chaos Spectrum.
The Logitech G903 has an excellent click latency. You won't notice a delay when playing reaction-based or competitive games with this mouse.
The sensor on the mouse we tested is the PMW3366. There's also a variant with the HERO 16K sensor that, according to specs, reaches a higher maximum CPI. If you want something with a much higher max CPI, then check out the Logitech G903 HERO.
The Logitech G903 has an outstanding vertical mouse wheel. Apart from the feedback it provides, you can also tilt it so that you scroll horizontally in your documents. Also, there's a scroll unlock button that allows you to toggle between incremented or infinite scroll.
The compatible software is excellent. The Logitech G HUB offers plenty of customization options and is great for gaming. You can easily customize its lighting, the performance, its buttons, and more. The mouse's onboard memory feature lets you use it on a different computer without having to reprogram it. There weren't any software problems during testing, but users online have reported various problems trying to use the Logitech G HUB software, including but not limited to startup issues, freezing, and connection issues with some devices. If you'd like to share your experience using Logitech G HUB with this mouse, feel free to leave a comment in the discussions.