The Control R1 is the first mouse I tried from Tesoro's line up, but I hope it won't be the last. It's a very well-designed product, but has some performance-related flaws that could be fixed very quickly. The R1 is a robust, large mouse designed for right-handed users, and its shape will mainly fit palm-grippers with medium to large hands. Weight-wise, it's balanced, and its 95 grams are suitable for anyone coming from a similar-sized rodent.

As for surface materials, the top part of the shell is rubberized, and the sides are made out of textured plastic with some glossy inlays, which makes for a pleasant touch and a good amount of grip. The Control R1 didn't slip out of my grasp even when my hands were sweaty. Build quality is almost topnotch as well, but there's some minor rattling inside if the mouse is shook—it is most probably generated by an internal cable.

When it comes to tracking, the PixArt PMW3360 is still one of the best choices a manufacturer can go for, and Tesoro did. The mouse thus has raw and responsive tracking. One issue particular to this mouse, however, is the unusually high CPI divergence mainly present on the lower steps. It can be fixed easily with a firmware update, and may even only affect my copy.

Buttons are decent to say at least; however, they could be tweaked a tiny bit. The main buttons are very light, spammable, and tactile, but have some post-travel after actuation. They use newer Omron D2FC-F-7N models rated for a lifespan of over 20 million clicks. Unfortunately, their latency is rather high, which may be intentional because it reduces accidental double clicking, although there should be an option in the software to set a lower value. Both side and CPI buttons are of medium tension, and very tactile and easily spammable. Scrolling is of medium resistance and average tactility, and the middle click is too stiff for my taste.

The mouse feet are great compared to most gaming mice. The Control R1 glides across surfaces smoothly, with hardly any friction. Unfortunately, there are no replacement skates included with the mouse, so once these wear out, you have to go for aftermarket models, which is quite a letdown at this price tag. The cable is not the most flexible as it generates a good amount of resistance, so using a bungee or affixing it somehow is highly recommended. It's braided and 2 m long.

Tesoro 360 looks great, but is pretty illogical in terms of labeling. However, it is perfectly usable as all functions just work, and it's snappy, too. It's also fairly lightweight since it doesn't consume a lot of memory while running in the background. There are a lot of RGB-related options, too, since the mouse has three individually controlled lighting zones—based on the lighting you pick, nearly the whole bottom area, scroll wheel, and rear Tesoro logo can light up.

At $59.99, the Control R1 has many viable competitors, although none feature the same shape, which should be a deciding factors when buying a mouse. The small performance drawbacks I came across are easily fixed with a firmware update, which I'm sure Tesoro will soon deliver. With those implemented, I will happily recommend this mouse to anyone who finds its shape and specifications right for their needs.