They are good quality beads though. His knowledge of solar mechanics and his two high-end telescopes allow him to coronal mass ejections heading for Earth and lay in survival supplies. This has never been a problem with my Howard Leight electronic muffs. Ive been using it plugged in. I got the size 9/10 Large and they fit perfect. Its a lot more responsive than the old one, and has a much more tactile feel to it. The existing power antenna hole was till there. They are nice looking enough for him to wear to his classes @ college. The advantage of capacitive buttons is that you avoid unvoluntary actions with touch-sensitive buds. If not turning them off after use made them die that quick I wasn?t aware that the headphones would run out of battery life that quickly