With it being so hit and miss I do still tend to take wired earphones for any activities which is very disappointing really, the fit is so good with these earphones you really can forget that the neck holder is there. Took a bit of time to assemble, but very pleased with purchase. And the call quality is decent. Noise CancellationYou can toggle NC on and off by a tap on the bud if you need to hear your surroundings more. The microphone is like a WWII satcom. This morning I pulled them out and miraculously they turned on! During the night I would put my arm under my pillow to support my head and ended up getting bad elbow pain because of it. Compré el 39 o 9 que es mi número y me quedaron grandes. I must admit I don?t use it alone to secure my soft feet but in conjunction with my foot cream and soaking. Strong magnet holds your devices well although I?m not a huge fan of the ear bud charger as I would prefer it to be wireless but that?s just me.