Vorerst. Like the volume control and pause/hang up. I bought a replacement thinking I might have gotten a faulty unit. I noticed a few other reviews mention these issues. I am NOT a paid reviewer. I do not recommend these batteries. Did not like seeing the upper just tacked to the rubber instead of a solid seam. Will wear these probably for life! I have had these for months now and I love everything about them. Cant beat the price.