I do lot of cycling as well as weight training and always use earbud to help the time pass . I have 5 different set of bud and this Panasonic set be my least favorite . the high be clear and well define but they have zero and I mean zero bass . all four of my other bud have better bass response although all be not as clear . if you really like treble with little bass these be the bud for you but if you like metal or rock these be weak . I do like the ear piece as they do stay put , just can not listen to the `` tinny '' sound these produce .