When I bought these, I was amazed. Worked well and all.
Now, I am not so impressed. A few months down the line, the inside wire seems to have broken. The outer casing has not broken, just the inside. This means that I have to constantly jiggle the wire about to get one of the sides to work. It is getting worse every day - its harder to get both ears to work and soon neither will work I expect.
They could do with thickening the wires - I bought a pair of earphones from poundland as a temporary solution until I can get some better earphones.
If you want to just test out what these types of earphones are like, or dont mind buying another set a few months down the line, then go for it. If you expect them to last, then dont.
I have checked on the internet and I have found multiple people who have had the same problem as me, so be warned!