Good fit on the head. In sound, well, I mostly listen to podcasts, so there it is perfect I must say.
Recognized perfectly by my galaxy note 3 bluetooth. FYI jack cable comes when battery worries. Probably a accu.D'ailleurs I do not know yet the autonomy of the beast. Micro usb recharging the headphones.
Play, pause, forward, backward taking of any appeal and is perfect for a walking android whether listening to music or a podcast app.
But for fans of hip hop very very Bad Bass - Very poor sound insulation against. For outdoor use this can be boring if everyone hears your sound when you're at the bottom. Not convinced for outdoor use but it is to be tested.
A 40th great product. For outdoor use, try it before if you can.
Anyway at that price for my part, the contract is completely fulfilled.