Setup, Design & Observations
Though the MasterMouse body itself is only 89g, it feels dense, and well built, and perfectly balanced. We have mentioned previous that it is a smaller mid-sized mouse, meaning, it is a little off the standard 130mm length sitting at 117mm, but it isn't small enough to be considered a 'small' mouse. So if you are palm grip user with large hands, you may prefer a slightly larger mouse. That being said, the MasterMouse S is comfortable in both palm and claw grips, with that advanced Cooler Master UV coating providing a pleasant grip and texture.
The mouse wheel feels solid, with no rattling to be heard, its scrolling is punctuated with tactile steps. The mouse mouse clicks feel a little spongy and could do with being tightened up a little, though the use of Omron switches rated for 20 million clicks provides peace of mind. The side buttons don't give the most satisfying click, giving a rather loud *tuk* kinda sound, though they too feel solid and don't distract from in game performance.
Despite generally preferring braided cabling, the cable style used on the MasterMouse S looks attractive and is supple and flexible without causing any hindrance.
Performance
Setting the sensor to its maximum 7200DPI, I was surprised to find very little jitter, and throughout its entire DPI range, the MasterMouse S remained responsive and precise. Testing the sensors tracking across various surfaces we found that it operated flawlessly across black fabric mouse mat, white paper, coloured paper, bare desk, plain cardboard and glossy, coloured card. I guess it goes without saying that the PWM3330 sensor is a worthy successor to the 3310.
In our testing we found that Cooler Master have implemented the Pixart PWM3330 sensor perfectly, providing fast, reliable and accurate performance across our favourite games including Battlefield 1, CS:GO, DOTA 2 and more. The general hallmark of a great mouse is its ability to instill the comfort and confidence one needs regarding its accuracy you need in those clutch moments (like a game changing blink> Black hole) without messing things up.
