I bought these headphones for jogging and not listen to the negative Rezesionen.
The headphones came as always fast and have - like most in-ear headphones - a good sound. They can be quite easily attached to the bracket at the ear. So far so good. First test passed.
But if you start with the sport and move something (probably you sweat, too easy on the ear) catch this "sport headphones" to constantly slipping out of the ear. So much so, that's the sound toward poor to inadequate. Now you have two options: either every 20 seconds one of the two headphone press again in the ear, or you are on and listen to background music without bass and sound.
Spoilt for choice for 15.30 ....
Unfortunately, bringing the various sizes provided for the plugin no improvement. The only meaning of the bracket is then that the inears fall not quite. Maintenance do not bid. Yesterday I was jogging with normal hearing ear head. I did not have to correct 1x.
My recommendation due to many years of experience: either with normal ear sports bookmakers and live with this every now and then have to change to - or to look for another sports headphones. Pity for money!