For contacts only, I suppose, because it leaves a lot of white residue, and I have seen better results from more expensive ones, but the price is good.

I did my job, I cleaned what I wanted. HOWEVER.... I hadn't noticed that it says on the box that it needs at least 15 minutes to dry. So, I ended up with a car plug filled with cleaning liquid that wouldn't dry. It had sprayed too much liquid and it wouldn't evaporate. I had to blow it and wait 15-20 minutes for it to dry to make sure I could plug it back in. This makes it inconvenient. However, it is a good price and it did the job.

It does what it promises. So far, I haven't encountered any issues when applying it to cables and electrical contacts. It dries quickly without leaving any residue or dirt. It also sprays strongly and with pressure. The quantity at this price is good. Value for money purchase.

It does its job just fine. It does what it says: cleans electronic contacts. Of course, don't expect it to "save" your phone if it fell into the sea. It doesn't perform resurrections.

One of the best on the market! Plenty of pressure, leaves no residue, cleans. All these things you want it to do, basically!!

I use it for cleaning dust residues and dried thermal paste on computers. It can only be compared to the amazing EC-90, which comes at triple the price. Excellent cleaning, dissolves dried pastes directly, dries quickly, and leaves no residue. It is safe because it is non-conductive and does not leave a strong odor for anyone who might be interested. Highly recommended for this use.

In an old power supply internal antenna that couldn't catch anything and was for throwing away, I sprayed switches, contacts, and the rotating regulator, and it works perfectly. In radios where the volume setting scratches, it was fixed. Switches, old elevator buttons, everything works perfectly! If it falls on other moving parts, they need lubrication because it dehydrates them. That's its job, to remove grease, salts, residues, and oxidations.

It has been tested on the faders of an analog Behringer sound console and while it fixed the crackling caused by dust and dirt that had gotten inside, it also removed the lubricant inside the faders and now they stick quite a bit.
Maybe it would be better to get another one with oil and after using this one, apply a little bit of oil.
Also, it has a very small brush (about 3cm) so this might make it a bit difficult for you.
Other than that, it's an excellent product. It did what I wanted and at a very good price.