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Logitech G502 Proteus Spectrum Review

Logitech G502 Proteus Spectrum Review

by 2016/02/25

£69.99 on Amazon UK

Product Name

Logitech G502 Proteus Spectrum RGB Tunable Gaming Mouse


• Good ergonomics
• Highly customisable
• Feels comfortable while using
• Plenty of programmable inputs
• Variable sensitivity adjustment
• Durable cable
• Appealing design
• Software interface is very effective for tuning


• Teflon stands may wear off
• Scroll wheel too sensitive
• Cable may feel too heavy

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The Logitech G502 Proteus Spectrum does everything a perfect mouse should do. It's highly customisable, it looks good, works flawlessly and it is durable.

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When was the last time you bought a mouse and checked out the technical specifications? Probably never! The Logitech G502 Proteus Spectrum is one sophisticated mouse you will encounter and leave you wanting it. An average buyer will rarely realise the true meaning of some of the specs, such as “Coefficient of friction” or “USB report rate” and so on. The amount of customisation this mouse offers is truly beyond the need of an average user. Gamers, architects or graphic designers will find this mouse very useful in their daily work.

The Logitech G502 Proteus Spectrum viewed from above.

The Logitech G502 Proteus Spectrum viewed from above.

Perfect ergonomics on the Logitech G502 Proteus Spectrum

The Logitech G502 Proteus Spectrum can be considered as a successor to Logitech G9 mouse, which was known for its comfortable ergonomics and good performance over a number of years. The G502 has 11 programmable buttons, sensitivity tuning ability, surface tuning ability and even has a possibility to change the center of gravity. I personally feel that Logitech has put in a lot of thought into the design of G502. There is hardly anything left on this mouse which cannot be changed or customised to your needs.

Those who have been using the first version of the G502, the Proteus Core, will immediately notice that there is absolutely no change in the Proteus Core and the Proteus Spectrum, i.e. the new version. Logitech admits that the only thing changed on the newer version of the mouse is the name and the ability to change the colour of the LED.

A side view of the Logitech G502 Proteus Spectrum.

A side view of the Logitech G502 Proteus Spectrum.

The G502 Proteus Spectrum comes with strong, braided cable that is going to last for quite a while. According to Logitech, they are using the best optical sensor on the market which can go from mere 200 DPI resolution all the way up to 12,000 DPI.

The overall design of the mouse is small and people with small hands can easily find this very appealing. On the sides you find a thumb rest whereas the palm rest of the mouse is covered in soft material. The claw grip is rough textured rubber. The right click and the left click buttons are perfect. They do not require any excess force to click nor do they get clicked on applying too little force, which is an important factor for gamers.

Programmable buttons sit on the sides of the mouse and they are easily accessible by your fingers. Care has been taken that these buttons do not get pressed too easily which can cause problems while gaming. The two buttons to change the mouse sensor’s resolution are located just south of the scroll wheel and somewhere around there you can spot the 3 LED bars that indicate the DPI setting. When you are 12000 DPI, all three LEDs glow while at 200, only one glows.

The scroll wheel is metallic and extremely smooth to operate and offers free-scrolling feature, so much so that it may even move even when you do not want it to. This can be fixed by locking it down. You can also scroll up and down by pressing the scroll wheel left or right.

On the bottom of the mouse you will find slots around the optical sensor. These slots can be used for adjusting the weights and changing center of gravity. Each slot weighs 3.6 grams and you get a bunch of these with the package.

The Logitech G502 Proteus Spectrum with the included weights.

The Logitech G502 Proteus Spectrum with the included weights.

Flawless performance

The ergonomics being of the utmost importance in a mouse design, the overall electrical performance must also be taken into consideration. Especially the responsiveness of the optical sensor, report rate and the software interface with the hardware.

Logitech provides a simple software set-up which can be used to change the LED color, program the buttons, change sensitivity and other functions. Good thing is, if you happen to own Logitech Mechanical keyboard or Logitech gaming headset, the software allows you to sync the LED colour on all three. Changing the programmable button functions is very easy. On the software interface, you press on respective buttons and then choose the function you want to assign to it.

On the inside, G502 has STM 32 series ARM microcontroller which also has USB HID support.

The Logitech G502 Proteus Spectrum viewed from behind.

The Logitech G502 Proteus Spectrum viewed from behind.

DPI switching is very smooth and can be done on the fly while playing a game or while you are in the middle of making an important CAD drawing. I have come to notice that DPI above 2000 is not really necessary. Only if you are camping on the map for long durations and need to snipe someone on long range will the super high DPI setting come to any use at all.

With the original presets intact, the right preset button on the side has the sniper mode which instantly switches the DPI to a very high setting in order for you to take the perfect shot.

In terms of daily usage, you will absolutely love the mouse but there may be some issues with the teflon feet underneath the mouse wearing off. Due to unusual shape and placement of the teflon feet, the wear on them will be uneven and you may experience undue friction in certain areas. These problems are minor and can be fixed by replacing the teflon pads with new ones.

Another view of the Logitech G502 Proteus Spectrum.

Another view of the Logitech G502 Proteus Spectrum.


The Logitech G502 Proteus Spectrum does everything a perfect mouse should do. It’s highly customisable, it looks good, works flawlessly and it is durable. If you have doubts on its durability, you should check out the user reviews for the G502 Proteus Core which has been out for 2 years and it is by far standing tall in terms of durability. G502 Proteus Spectrum is identical to its predecessor in every aspect except it comes with an RGB LED.

If you are looking for a perfect mouse, the G502 Proteus Spectrum is worth buying. Also check out the Razer DeathAdder Chroma which happens to have almost identical tech specs but it is not as customisable as the mouse we have reviewed here.


United States: Newegg, Amazon


United Kingdom: JohnLewis

International: eBay

The shape of the mouse in real life is much more economic than the pictures suggest.

I can say confidently that I have had no issues with the feet of this mouse, when given a quick dusting they are as good as new (super smooth).

If you switch from the soft clicks say from Razor, such as Black Mumba 2012 and DeathAdder, then you may feel these buttons need a little force to click.

The middle wheel is too sensitive. Sometimes it moves without I want it to.

  • Logitech's most accurate sensor on the market
  • 32­bit microcontroller
  • 3 on­board profiles
  • 1 millisecond report rate
  • Primary buttons rated to 20 million clicks
  • Mechanical microswitches
  • Improved keyplate design for better click feeling and performance
  • Braided cable with hook and loop cable tie
  • Sleep mode disabled
  • 3 DPI indicator LEDs
  • Rubber grips
  • Magnetic weight­cavity door


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About The Author
Salil Tembe
Salil is an electronics engineer who has a passion for expressing his love for technology through writing. He firmly stands for open sourcing everything that makes our lives better.

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