I have used this kit on everything from my laptop, an old phone I was selling, my newer phone, my headphones, and a few other odd things around the house.

This little kit comes with everything as shown in a little convenient sized kit.
Every tool within is designed for a specific job, however its quite intuitive on what you're supposed to use. The little pick it good for scraping any harder debris off or out of harder to reach areas and the brush helps keep it clean.
It has something for everything, ive cleaned everything from the cameras on my phone, the microphone and speaker holes on my phone as well as my earbuds and done so without damaging them. All the little tools are soft, I have no issue cleaning a $5000 camera lens with the the little cleaning swabs.
I am pleased with what its done thus far and it makes cleaning these smaller and harder to reach areas much easier.
The only con I have is the overall feel of the kit is slightly cheaper, all plastic and can be flimsy. For that reason, I think the price is a little bit high and would be more inclined for purchase around the $25-30 mark.