Heavier duty then a lot of other ones I looked at. The earphones last about 4 hours on each charge, and the case can recharge the earphones about 5 times. The roller and 2 side buttons feel the same or worse than a 10 dollar mouse. It was annoying, and after 2 years, the pad just wouldnt stay on at all, so I removed it. It worked well for my needs. Plus they have the bonus of making you a wee bit taller. yellow. As with the other reviews, this is one shoe that doesnt need breaking in. They fit just a bit bigger than standard sizing but are still comfortable. Wished I had ordered three kits, although would had paid more (I stated the other kits were on promo of a major unnamed competitor).