The Logitech G703 LIGHTSPEED is a great wireless gaming mouse. It's well-built and has a comfortable shape that suits most grips and hand sizes. Click latency is also extremely low, whether you play wired or wirelessly through its USB receiver. Its HERO 16k sensor provides exceptional performance, with a wide CPI range, short lift-off distance, and high polling rate. The buttons are clicky and satisfying, and they're all programmable via G HUB, where you can also adjust performance settings and customize the RGB lighting. While the scroll wheel feels sturdy, it doesn't support tilt inputs, and you can't unlock to scroll through long documents quickly. On the upside, it's fully compatible with Windows and macOS, and it has on-board memory to store profiles.
Update 09/29/2020: Logitech has released a firmware update (version 22.2.15) that increases the HERO sensor's CPI range. It can now go up to 25,600 CPI.
The Logitech G703 is a great mouse for office use. It's a well-built mouse with a comfortable shape to use for long hours. It has a total of six buttons, all of which are programmable. Unfortunately, while its wireless connection allows you to keep your setup clean, it needs a wireless USB receiver since it doesn't have Bluetooth capability. Also, the scroll wheel can't tilt for side-scrolling, and you can't unlock it for infinite scrolling.
The Logitech G703 is excellent for FPS games. Its wireless connection and fairly lightweight design allow you to move freely and quickly. It has low click latency, a CPI setting that you can adjust in small increments, and a high polling rate that makes your movements feel smooth. It's suitable for most grips and hand sizes, and shouldn't cause fatigue over time.
The Logitech G703 is excellent for playing MMO games. It has a good number of buttons, all of which are macro-programmable through G HUB, but it won't give as many as dedicated MMO mice. It's very comfortable to use and shouldn't cause fatigue during those hours-long raids. It has a wide CPI range, and you can adjust the CPI setting in small increments to get it exactly to your liking.
The Logitech G703 is very good for ultra-light gaming. It's wireless, lightweight, and you can make it even lighter by removing the plastic cover on the underside. However, it's not quite as light as some other options with a honeycomb pattern or other dedicated ultra-light mice. On the upside, it has low click latency to make every action feel instantaneous, and its high polling rate makes your movements feel smooth.
The Logitech G703 is an okay mouse for portable use. It doesn't have Bluetooth capability, so you can only connect to it wirelessly using the USB receiver. Unfortunately, there's no compartment to store the receiver, increasing the chance that you might lose it. Also, the mouse is fairly bulky. On the upside, it has on-board memory, so you can carry your settings with you without the need to install the software.
The Logitech G703 LIGHTSPEED has a sleek design and looks nearly identical to the Logitech G403 Wireless Gaming Mouse. It has a matte finish that feels soft to the touch, and the rubber grips on the sides blend in well with the rest of the mouse. The logo and the scroll wheel have RGB lighting built-in, which you can customize via software. The lighting is visible even in a well-lit room. It isn't too heavy on the gamer aesthetic, so it shouldn't look out of place in a work environment.
Even though the Logitech G703 is a wireless mouse, it's on the bulky side, and there's no compartment to store the USB receiver, making it less ideal for portable use.
The Logitech G703 is a fairly light mouse, suitable for FPS games, but isn't quite as light as some other options like the Glorious Model O or even the Razer Viper Ultimate. You can also make it heavier by adding the included 10g weight, which is kept in place by a plastic, magnetic cover on the mouse's underside. If you want the mouse to be lighter, you can remove the cover entirely, shedding another 3g.
The build quality is excellent and identical to the wired Logitech G403 HERO. It's all plastic, but everything feels solid and sturdy. The buttons are clicky and satisfying, and the sides are nice and grippy. The feet are good quality and allow the mouse to slide around smoothly.
The Logitech G703 is very comfortable and shouldn't cause any fatigue. It's slightly slanted and designed for right-handed use. The side buttons are well-placed, as they're high enough that you won't trigger them accidentally but still close enough to reach comfortably. They're also big and easy to differentiate by feel. The mouse is on the bulky side, and it has a fairly big hump that makes it less ideal for those with small hands and using a fingertip grip.
The Logitech G703 is suitable for a palm grip regardless of hand size.
Due to the mouse's fairly big hump, it can be difficult for those with small hands to reach the scroll wheel and click the buttons when using a claw grip.
The Logitech G703 isn't ideal for a fingertip grip unless you have large hands, as the buttons and scroll wheel are hard to reach for smaller hands.
The Logitech G703 can only connect wirelessly using the included USB receiver since it doesn't have Bluetooth capability. It has a built-in rechargeable battery, and it's usable while charging. The battery is rated to last up to 35 hours with the RGB lighting on and 60 hours with it off; however, we don't test battery life.
The cable is braided and of good quality. It's flexible and doesn't keep any kinks. Although the connector looks proprietary, it's just a regular micro-USB connector, so you can use any cable that you like. If your desktop computer is placed far enough to affect performance, a receiver extension adapter allows you to place the receiver closer to you. When the mouse is plugged in, data is sent via the wired connection, not wirelessly.
Update 10/07/2020: We increased the total number of programmable inputs by one. We incorrectly listed that you can't reprogram the left button without assigning the left click action to another button, but you can reprogram the button.
You can switch profile and CPI setting directly on the mouse, and all the buttons are programmable through G HUB. The mouse has two side buttons on the left side, which might not be enough for more serious MMO players.
The mouse wheel is incremented, but unfortunately, you can't unlock it for infinite scrolling like some other office-oriented Logitech mice, and it also doesn't support tilt inputs.
The click latency is extremely low, and most people shouldn't notice any delay when using this mouse wirelessly or wired.
The Logitech G703 has superb software support. Logitech's G HUB lets you customize the two RGB lighting zones, remap buttons, program macros, and adjust performance settings. There's on-board memory to save your profiles, so you can access them on a computer that doesn't have G HUB installed.
There are two versions of the Logitech G703. Although they look identical, the original version (non-HERO) has a PMW3366 sensor with an advertised 200 to 12,000 CPI range, while the HERO version that we reviewed has a 100 to 16,000 CPI range. We reviewed the HERO version, and don't expect our review to be valid for the older model.
The Logitech G703 LIGHTSPEED is a great overall gaming mouse and seems to be a nice upgrade over the previous model thanks to the latest sensor, although we didn't test the older one. However, if you want a wireless Logitech mouse with more side buttons for MMO gaming, you can also look at the Logitech G604 Lightspeed, although it's a bit more expensive. For a wired-only option, take a look at the Logitech G403 HERO. For more options, check out our recommendations for the best wireless gaming mouse, the best FPS mouse, and the best gaming mouse.
The Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor is slightly better than the Logitech G603 LIGHTSPEED. Both mice have the same shape and the G703 has RGB lighting. It has a slightly wider CPI range, a rechargeable battery, and it has RGB lighting. However, the G603 has Bluetooth support and it's more portable because it has a compartment to place the USB receiver.
For most uses, the Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor is better than the Logitech G305 LIGHTSPEED. The G703 is lighter, more comfortable to use, and has better performance due to its wider CPI range and lower CPI error. It also has better build quality and RGB lighting. However, the G305 is smaller and more portable, and its ambidextrous shape makes it more suitable for left-handed use even though it has thumb buttons on the left side only.
Overall, the Logitech G903 LIGHTSPEED is better than the Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor. The G903 has twice as many buttons, and the scroll wheel can be unlocked 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.
Overall, the Logitech G604 LIGHTSPEED is better than the Logitech G703 LIGHTSPEED Wireless Gaming Mouse 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 Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor and the Razer Mamba Wireless are very similar. The Logitech is lighter and has weight optimization, and its click latency is lower. On the other hand, the Razer has more buttons and is more portable since it has a compartment to store the wireless USB receiver.
The Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor and the Logitech G Pro Wireless are very similar performance-wise since they have the same sensor. The difference between the two is that the G703 is designed for right-handed use, while the G Pro Wireless is ambidextrous. The G Pro Wireless is lighter, has more programmable inputs, and its PTFE feet provide a smoother glide. The G703 has marginally lower input lag and is more comfortable to use.
The Logitech G502 LIGHTSPEED and the Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor are nearly identical in performance since they have the same sensor. The main difference is that the G502 is designed for MMO games and has significantly more programmable inputs, while the G703 is a much lighter mouse that's meant for playing FPS games.
The Razer DeathAdder V2 is marginally better than the Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor. The Razer is lighter and more comfortable to use, and its PTFE feet provide a smoother glide. On the other hand, the G703 is wireless and fully compatible with macOS, and it has a lower CPI error.
The Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor is a better gaming mouse than the SteelSeries Rival 3 Wireless. Although they're both wireless, the SteelSeries is better for travel thanks to its USB receiver storage, which the Logitech lacks. However, the Logitech is more comfortable for right-handed people thanks to its slightly curved shape and well-placed buttons. It has a wider, more adjustable CPI range, a lower click latency, and a lower lift-off distance, but it doesn't have Bluetooth.