I own a pair of these and while I -HIGHLY- recommend them you need one basic care to keep them in tip top shape, first of all: Clean your ears properly, these earbuds are notorious for getting clogged with the slightest of earwax preventing the sound from coming through normally, if it ever does happen a light spray of Hydrogen Peroxide or rubbing alcohol and a soft bristled toothbrush will take care of that, these are IPX2 so don’t get them too wet with the H.Peroxide, alternatively Blue tack will remove dry wax, but be super careful when peeling to prevent the Blue tack from sticking to the speaker holes, for that you have to press and then peel SLOWLY… I only dealt with this issue once when I forgot to clean my ears for 2 days in a row, never again.
Other than that, fantastic earbuds, I use them 8-10 hours a day for 5 days at the office and so far so good!