Offering a powerful, bass-driven stereo sound with greater clarity and improved dynamics over standard earbuds are the Sennheiser CX 300-II in-ear headphones. The various sizes of ear adapters (S/M/L sizes) provided in the package allow for a customized fit as well as exceptional noise blocking capability. A convenient carrying pouch is also included for easy storage.
I used same model for ~5 years before. Now it's the time to buy a replacement.
What I like the most, it that they fit my ears perfectly (100 times better than Apple AirPods Pro, which is ridiculous), sound is 7/10 for an average music listener (a little bit too much bass + a little bit too muddy mids + weak highs). Totally worth the price! (of course if you're not too picky about sound quality)