Perixx PERIPRO-303 GLV Small Trackball, 1.34 Inches Ball for PERIMICE and M570, Glossy Lavender

Nice colour.

Bought this for the colours, as I was building a white and purple set up and I SO HAPPY with the way it looks. It works perfectly with both my M570 and my M575, I can't believe I didn't know about these before!

I got this trackball as I saw some chat online that it was a great way to improve Logitech trackball mice and I found the stock ball a bit light and a bit bumpy. The Perixx ball weighs 5g more than the stock ball and it could be just me but it feels like it makes it easier to use the mouse at a higher sensitivity that I like to work with and it's much smoother than the stock ball and it's dead easy to pop out the old ball and insert the new one no screwing or opening required. 10/10 would recommend.

It is good to have replacements

I needed a new ball for my MX Ergo, so I searched for mouse Balls and literally found no balls at all. Then while doing a balls search on Amazon, found these Perixx balls but there was dispute in the reviews as to whether these balls were the right size with one reviewer stating that the MX Ergo used 33mm balls. This person was so totally wrong, I measured my Ergo ball with my ever-so accurate digital measuring thingy and my ball measured 34.04mm, this being the ball that was originally inserted in my MX Ergo mouse (I got Gorilla Glue on my original Ergo ball because I was being very clumsy trying to mend something and the mouse got in the way)Anyway, this pretty green ball fits and works with absolute perfection and I have to say I have always wanted a green ball in my mouse for no other reason that it just looks so cool.So if you get glue on your ball, or manage to scratch your ball or damage your ball in your Logitech mouse in any way, this ball will fit and work.....and I suppose that the red one would do the same, but it wouldn't look as cool

I've been using an MX Ergo for a couple of years. I've recently bought the left handed Elecom so I can switch between right hand and left hand to help with shoulder pain. The ball in the Elecom is well known for being not particularly smooth. I therefore kept swapping the ball from the MX Ergo into the Elecom each time I swapped from my right hand to left hand. This was a little tedious so I bought this Perixx ball to use in the Elecom. Unfortunately I found the Perixx ball to be no smoother than the standard Elecom ball. Fortunately Amazon allowed me to return it for a full refund.

Used this trackball on my custom built-keyboard, it is so smooth! I feel this is probably has higher quality comparing to Logitech's factory trackball. I have also replaced Logitech's trackball with this one, performs much better.

I got this because there was a small scratch on the ball in my Jellycomb trackball., and the item in Amazon said "compatible with most makes". It's true, it was compatible because it fit perfectly into the alcove created for the ball, and everything seemed to be excellent.Unfortunately, once I tried using it, nothing happened. I think the Jellycomb ball has "micro etchings" on it (even though their materials don't say they do) because no matter how I rotated this and pressed here there and everywhere, the cursor refused to budge. As soon as I put the original ball back in, everything was fine, albeit it caught every now and again when the scratch crossed a roller 9which is why I was looking to replace in the first place).So, this ball is an excellent product, perfectly sized and a lovely finish, just pointless if you own a Jellycomb trackball...