The Logitech Proteus Spectrum is arguably one of the most anticipated peripherals from Logitech. Building on the success of the Logitech G502 Proteus Core, the Spectrum version has been updated to glow in 16.8 million different colors. In time, the G502 Proteus Spectrum will replace the G502 Proteus Core as Logitech’s flagship wired gaming mouse.
The G502 Proteus Spectrum still has the aggressive angles and sharp lines reminiscent of a jet fighter from 2070. Its surface texture smoothly transitions from matte plastic into the hard rubber side grips. The numerous side buttons inconspicuously blend into the chassis for a seamless look.
This design is as functional as it is cool. The thumb rest on the right side does a good job of keeping your thumb off of the mousepad. The rubber grips on the left and right flanks feel exceptionally comfortable as well. The G502 Proteus Spectrum also has mouse feet for days—there are Teflon gliders in the front, back, middle, and sides of the base.
Being Logitech’s flagship mouse, it’s no surprise that the G502 Spectrum has fantastic build quality. With details like the metal scroll wheel, thick braided cable, and a polished chassis, the mouse is built to last. The buttons feel tactile and responsive and equally resilient with a life cycle of up to 20 million clicks.
Despite being 2.95 inches in length, the G502 Proteus Spectrum is friendlier to claw grip and fingertip grip users. The reason being that in palm grip, the user’s thumb rests right over the thumb button, which make it prone to misclicks.
The mouse weighs in at 4.3 ounces, but this is configurable by the user. The G502 Proteus Spectrum comes with a set of extra weights that can be inserted to its base once its magnetic cover is removed. The weights are 36g apiece and V-shaped (for victory!). Users can use them to increase the weight of the mouse as well as to shift the balance point by distributing them unevenly to the front or rear. We chose to add two pieces to the center of the mouse for a heavier, but still balanced feel.
While we’re glad to see both infinity scrolling and notched scrolling on the scroll wheel, its notched mode is incredibly loud. If you’re going to be gaming when your roommate is studying, this could technically constitute as a noise complaint. In the infinity mode the scrolling is virtually silent, but is also more difficult to control. We initially had some concerns over whether the metallic wheel would become too slippery for sweaty fingers, but that concern was quickly laid to rest as the ridges on the wheel kept it very grippy.
Logitech installed the most bad-ass sensor it could find into the G502 Proteus Spectrum—its Pixart PMW3366 optical sensor is hailed by many as one of the best currently on the market. Logitech also flashed it with its G Delta Zero image correction algorithm to minimize acceleration.
The result is a buttery-smooth tracking experience. We didn’t feel any acceleration or angle snapping. Movement was responsive and accurate. There were some small but noticeable jitters in small movements at DPI settings beyond 9,000, but I highly doubt that anyone would be playing at that range. While there’s no setting to change it, lift distance is very low.
The G502 Proteus Spectrum features a condensed yet organized button layout optimized for lightning-quick access. The two buttons next to the left mouse button add extra functionality without being intrusive. There’s also a thumb button in front of the thumb rest that’s set to temporarily decrease the DPI by default. We find this to be a great asset when sniping in first-person shooters and making small adjustments in Photoshop. As useful as it is, gamers with larger hands may accidentally hit it if they slide their hand forward.