Perixx PERIPRO-303GP Small Trackball, 1.34 Inches Replacement Ball for Perimice and M570, Glossy Purple

I ordered a similar item and was a complete waste of time and money. Then I saw this one a little more expensive and decided to give it a try. I can tell you the feel is the same as OEM, this was worth it, no doubt.

All good

I got a Logitech M570 trackball for my computer at home. I hate touchpads. I got a new laptop at work, and it only had a touchpad, so I got a M570 to use with my work computer, however, I did not want to get the two trackballs mixed up. I got this so that the two trackballs would have different colored balls, so I could tell them apart. I don't think it is significantly better or worse than the original. I got my wife an M575 for her laptop so I thought I would need to get yet another color to tell them apart (M570 and M575 look very similar - I think the latter just has Bluetooth too), however, the M575 was available in white, so I got her that. I would not hesitate to buy again.

I got this ball for the Logitech MX Ergo. The original ball had too much static friction, making it hard to make precise small movements. It would stick, then move too far. This ball has very low friction. It is easy to make small movements. The feeling is very smooth as well. It fits well in the mouse.If anything, I wish the rolling (not static) friction was higher. My thumb sometimes gets tired because this ball moves so easily, you have to engage a lot of thumb muscles to hold the pointer in place at times. This is sort of hard to describe. I personally like the slightly gritty and slower feeling of the blue Logitech M575 trackball better. Sadly you cannot buy that by itself.I recommend this ball. The red looks good in the MX Ergo. It is a deep dark blood red. Not much glitter in it unfortunately. Some room for improvement but largely better than the original silver ball. Price is reasonable, too.

New replacement ball works great. I had looked in the past for a replacement for the ball and could not find anything. I thought that I was going to have to throw away my old Trackball, but this new ball saved its life. I bought the black ball, but they have several other colors as well. I will buy another for my other Trackball.

Having a variety of colors is good for my artistic soul. The balls are surprisingly slightly different sizes.Sadly, my dark purple one ended up with a bubble. I thought it was a bit of food stuck on it. Attempted to scratch it off, ended up ruining the surface. Because the nodules are so tiny and sensitive, the ball kept getting caught.Was sad to have to toss it.

I bought this replacement ball for my Logitech MX ERGO, which worked well for me before I accidentally dropped it and subsequently put a pock mark on the original ball. The ERGO still worked but would occasionally get stuck when the support pegs would catch the pock and cause the ball to resist - not enough to really hurt anything but just enough to make digital drawing difficult and just enough to annoy me. This replacement ball has taken care of that for me and has proven to be a worthwhile expense for me.The ERGO and the M570 have the same size ball, so this ball can be used in either (I was using the ball from my old M570 in the ERGO while I waited for this ball to arrive). Replacement is a 30-second procedure and requires no special tools, though a pencil does make getting the old ball out a lot easier.There are two different finish types available, glossy and matte. I chose the glossy in red. Operation has been absolutely smooth with no resistance at all and no catches. I haven’t noticed any operational differences between it and the original gray ball that came in my ERGO. And, in my opinion, the dark red of this ball actually looks a little nicer than the original silver ball as well as the blue M570 ball.This wasn’t an expensive replacement and so far it has worked out very well for me. It has restored operation of my trackball to what it was before I damaged the original ball, which is really all I needed. Based on my experience with it, this is an easy replacement ball to recommend if you need to replace the ball in either a Logitech M570 or an MX ERGO.

I literally just got this, and the difference is incredible. I mean, that probably sounds like an exaggeration, but seriously. I got this to upgrade my Elecom EX-6 wireless trackball mouse. I needed more control for gaming, and more precision for productivity.So to go into detail, the difference is amazing. The original ball that came in the mouse seemed great, it was smooth, and glided effortlessly, but over time would stick. It would slide smooth, but not gradually. In other words, trying to make small movements would cause jittering as the ball would stick and release. Trying to click small buttons, or highlight text characters would be a real challenge, as the cursor would jump across a word instead of smoothly across a few pixels as intended. Trying to aim in games was almost impossible, like the mouse was overdoing every small movement.Now, the upgraded red ball. I chose the smooth glossy one because I wanted smooth control, and that's what I got. Instead of effortlessly gliding, the ball has enough resistance to give you that sense of control, like every movement is intentional. No free spinning. Also, it does not stick. Even on high tracking, when the cursor should move fast, I can still make adjustments one pixel at a time. You have immediate control, rather you want to swipe across the screen, or navigate to an exact point, even a hairpin size point. It's so natural, and effortless, better than I expected.This upgrade was essential, and any mouse it fits in would surely benefit from one of these.Small update, just wanted to say it's been a few days, and I've noticed the experience has been great. My accuracy with the mouse feels effortless now. If that changes over time, I'll update this, but if this doesn't change, you can consider it to still be true. Really glad I got this.