The headphones are in-ear (in other words, "plugs"), so they are very light and sit comfortably in the ears, which allows you to wear them for a long time without getting tired. With active head movements, the headset remains in place, so you can safely shake your head to your favorite tracks! The sound of the CMF Buds makes a very good impression. Dirac Opteo and Ultra Bass Technology 2.0 technologies provide deep bass, clear mids and transparent highs. The sound quality is at the level of the best models from leading manufacturers. The Buds A model is equipped with a 12.4 mm driver, and the Pro version has a custom two-component Dynamic Boost Bass driver.