These are amazing!! I can't say enough good things about them. Super affordable and the quality is great. I've been using them for over a year every time I go to the gym (3 to 4 times a week). The battery lasts a long time and they don't take long to charge. They are super comfortable to wear and adjustable. I have small ears, so I can't wear ear buds because they fall out, so these are perfect. These don't slip off when doing cardio. They also fold up for storage. I love them!!