Maybe its just because the ear piece fits my ear well but I swear these almost mute all outside noise when I put them in my ears. This product is a really great mouse. Sehr bequem immer wieder gern. They serve my purpose in every way, especially as we live in a Nursing Home and need to cancel out the background noises and not make a noise nuisance ourselves. Vionics are the way to go! I was skeptical at first, as I have purchased other chargers similar to this, only to have them fail. Re card enclosed they were just lying. [Updated after Logitech fixed their software. But if you?re going out for a night, running errands or on a walk - this is perfect. What I like about them is that they do not soak up water like my other flip-flops.