The headphones are adjustable and came ready charged so I could use them immediately. My routine involves intense 70 minute cardio 4 times a week. It may just be for appearance, but maybe its somehow connected with the sound being pretty balanced and even. Sound output to headphones is terrible and it has latency. Here are some thoughts:Pros-Quick connection. The extended sole sticking out the back of the shoe is a visual disaster. However the clamp matched the shape of the stay and the stand mounted well with no play. I?m thinking of trying a sturdier wire they the ball and adding some more bling while I?m at it. With this movie, it doesnt even feel long to me every single time I watch it (at least 5 times by now! But that could be another data breach.