So far it hasnt given me any issues Ive had it for about 2 weeks now and I am still on the first battery I put in. I got about 1 year or so on the previous pair. i will have a second pair of these soon. Too many parts and pieces to work on, taking a long time and now as I working on steps 7, the part#5, 6 where it has missing where I can actually put in the right screws as you can see attached pictures. Trust me. The slipper socks are so plush and warm that the inside feels like fleece. Not worth $29 at all I have upgraded these to ratcheting tie-downs. A decir verdad compré estos audífonos para usarlos sólo para hacer ejercicio así que esperaba una calidad de sonido regular/buena. These shoes from UGG are good.