This product was DEFINITELY NOT designed correctly! Quand aux aigus (médiums et Hautes fréquences) cest pourri. Once I took these off and wore my nude Tory Burch sandals the bottom of those were stained and ruined. Over all Im really pleased with this purchase, and cant wait to wear them on a hike. When I would plug them in sometimes they would automatically turn my volume down. I was replacing an old pair I got back in 2010. Light weight and the cushion for the ears are pillow soft. The buds can go 4-5 charges from the case before needing to be plugged in again. My recommendation would be, buy a cheaper headset if you absolutely need one now on a budget, grumble through a sturdy headset with sound issues, and save up for something like HyperX Cloud phone or something else of quality. it should be at least 2"s smaller.