Only downside but this is due to a certain type of use, sound capacity remains quite low if you are in a disturbed environments of style car, metro or whatever. Place all bottom sliders will not break your ears and somehow this is great! Lovers of big sound and Hardtek Dubstep style, you may maintain certain frustrations while before buying, test the Store, you'll have a better idea of the product!
Helmets controls work very well it's very convenient.
Personally I can not accept calls via my smartphone connecting headphones while this possibility is specified in the manual .. if someone advice on that let me know!
In short, if you love music and you are looking above all the pleasure of listening and affordable product, go for it!