I got this to practice algorithms without having to take a normal size cube around it is great. Not only is it small but it is a surprisingly great cube too. Definitely worth every cent

This cube is really good, it corner cuts 45° and about 2/3 reverse,
this cube is the best keychain cube, it has pink on the color scheme, beware. It doesn't pop either.

This cube is really good, it corner cuts 45 and about 2/3 reverse,
this cube is the best keychain cube, it has pink on the color scheme, beware. It doesn't pop either.

This cube is actually really good, it turns super well and corner cuts a bit. I ended up beating my record by about 7 seconds with this thing, it went from 36 seconds to 29. The only thing that annoys me about this cube is that after about a week of having it, the springs were grinding against the plastic on the inside of the cube, otherwise this cube is amazing!

This thing is just wow. It is about the same size as a couple other of my rubiks keychain cubes but a little bigger than others. This thing coner cuts about 40-45 degrees forward cuts and about 2/3-3/4 of a cubie reverse. I put a little Maru in this and kept it at factory tensions which are quite loose. At the time this only made my solve time about 5 seconds slower which was 35 seconds down to 40. Here is my but... I had this on my backpack at school so when I got bored I could just grab it from my keychain collection and cube a little bit. After about three weeks I had my first problem which was that the cube except for the cubie that was hooked onto the keychain came off and I thought I had lost the cube forever and then I found it. Two weeks later the same thing happened again but I didn't find it. That's why I cant say how good it is for going exceptionally fast as I now average sub-20 but the cube performs very well I would just suggest you not have it on the outside of anything except maybe a set of keys of something but even then that's a little risky.

Holy - I don't even know where to start! It's better than some normal sized cubes, And after putting DNM37 (As a joke / test) I didn't regret that decision at all and it now cuts over 45 and turns amazing :O

This keychain cube is one of the best but it broke after a month or two, but at the time when it was still together it was just like a mini speedcube.

This thing is really fun to play with. The size is great and the turning is amazing. It comes pre-lubed (not that it even really matters for a keychain cube). Overall it's totally worth $5 just to have a cube of this size.

Im comparing this to the mini DaYan ZhanChi and also the mini QiYi:

This cube has better construction; more precisely put together, I am very pleased with how the cubes line up and the over all look and feel of the plastic.

This cube corner cut very well, especially considering the size, other mini cubes that are actually bigger fail to perform as well as this one. corner twists and pops don't happen at all, unlike the QiYi mini.

I just take the keychain off and use it as a baby speed cube. but it is indeed very small...

Out of the 3 mini cubes I've mentioned I like this one the most in terms of performance, my only gripe is that it may just be a bit too small for my large hands. It would be amazing to see this cube in a 42mm size :)

This is practically a mini speedcube, and out of the box, it has great corner cutting, it has a very smooth feel, doesn't pop (or at least, it hasn't yet), and good speed. As a bonus, it is also fairly quiet when solving, and even more so if you're an accurate turner. The only downside is having the pink side instead of red. I'm not sure why YuXin did that, but oh well, it's so good that's it's worth it.

This is my go-to pastime while at work, so if there's absolutely nothing to do, (and there are no managers around) I can simply pull it out of my pocket, and quickly conceal it if need be.

P.S. When solving, try to do a yellow cross, so that you can slot the chained corner and keep it out of your way for the rest of the solve.