The earbuds charge quickly and have good range. Sound is very full. Basically these look like shower shoes to me, but the inscrutable preteen in your house will have a momentary truly happy smile of gratitude when she sees them. Perfect flip flops for my daughter. Mehr braucht es nicht. Unit seems quite solid as well. With that they have been perfect! In the box comes a “how-to” on adjusting the straps. I didnt notice a significant different in sound quality or volume level, but I am also not sure how much the guard does. *I wish:* I wish that they (and other headphones) would tell you the % battery left when you switch them OFF, as well as when you switch them on.