We've converted this review to Test Bench 1.2. This update simplifies our Weight test and expands on our CPI test from Test Bench 1.1, resulting in changes to test results in both sections. For more details, you can see our complete changelog here. That said, as convenient as the PowerPlay is, it isn’t going to get the Logitech G903 fully charged in a jiffy. Going from 0% battery to a full charge with your mouse on the PowerPlay would take between 12 and 14 hours, by Logitech’s estimate. With this arrangement, the Logitech G903 can pull a constant current of electricity to both power its operation and recharge its internal batteries. Not only that, the PowerPlay mat comes equipped with a wireless receiver that connects with your mouse, so you won’t need to occupy another USB port for a separate dongle – which you can instead plug into a laptop. 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. Some will argue that optical sensors are better than five-year-old laser technology, meanwhile, on paper Razer has a leg up on the sensitivity department. Ultimately, though, after using both mice for a week at the same time, we can confidently say they’re both equally as accurate and reliable.

The Logitech G903 might be a wireless gaming mouse, but it feels as seamless as a wired one. That’s no small feat, and that’s all thanks to the same Lightspeed Wireless technology that was also in the G900. We never experienced any latency or loss if signal despite using the peripheral in an office saturated with Wi-Fi, Bluetooth and every other type of wireless signal. We've added a small disclaimer to the Compatible Software Option section which highlights some of the most commonly reported issues users online have encountered with Logitech's G HUB companion software.