Prior to using this Philips electric shaver, I was pretty prone getting ingrown hairs in my armpits and in the bikini area. I can surely say that JBL is a really good brand, Im not here to blame them for it, but thats why I expected much MUCH more from the headset than only one year of service. And as far as the battery life its amazing, on one charge I can get 11 to 12 hours. I went on one run with these and that was enough to make me want to return them. maybe I should have ordered a half size up?????? Si no se tiene en uso se apaga solito después de unos minutos. In this case, Ill never know. Cant speak highly enough of this company! I also like that I dont have to replace the battery anymore and no battery cover to lose. I bought it for my 12 year old Great Pyrenees that some times has accidents.