Performance

The gaming performance of wireless mice has always been a bit behind that of tethered mice, but Logitech definitely pushed hard to close that gap. The G602 uses an optical sensor produced by Avago—we think it is the ADNS-3090. Logitech capped it at 2500 DPI, which is definitely also the limit at which that particular sensor begins to produce erratic tracking.

After getting used to the mouse through regular desktop use, we took it for a spin in CS:GO, and the results are surprisingly good. The mouse feels very precise, and the lag of previous wireless generations is completely gone. It does not feel quite as precise as the Ozone Xenon or Zowie AM, but is remarkably close. The main beef I have with it is that it weighs a lot because of its two AA batteries. The weight just makes it feel a bit more dull and puts a lot more strain on your wrist, which is not a good thing. You can actually run the mouse with one battery, but that makes it feel a bit lopsided. If you can live with that, doing so is definitely a good tweak; it would maximize both performance and comfort. Yet it is still quite heavy with even only a single battery installed.

For serious FPS gaming, the weight is my primary concern in terms of performance. The precision of the mouse at medium sensitivity is comparable to that of any mouse equipped with the ADNS-9800 sensor, which is incredible considering the non-wired nature of the G602. However, wrist fatigue is high enough for it not to be an interesting option for FPS gaming. This is a preference-based thing, but most FPS gamers prefer light mice. There is still a hint of lag, but it is, in all fairness, not any more annoying than the minor positive acceleration issue with ADNS-9800-based mice.

This mouse is perfect for any game that requires an abundance of buttons and good tracking capabilities—we really do mean perfect. It is incredibly comfortable, wireless, precise, and has a brilliant button layout. Its maximum sensitivity is 2500 DPI, which should leave some room to spare, even for players using a high sensitivity on high-resolution screens. The sensor tracks well on the surfaces we had on hand, our white top table was not an issue, and performance was as expected on our Func 1030XL and CM STORM soft mats.

Driver

The driver suite is simple and functional. You get the usual adjustment parameters for both tracking and button assignment. The profiles can be stored on the mouse, which is also the way of many newer gaming mice we have tested. All buttons are also re-assignable. There is no macro capability, but you can assign a key press plus a moderator, which is enough for most.