5 horas en el 2. they are sooooooooooo comfy. The user should be able to turn off the EQ or even manually control and customize a 10 band EQ & volume for each earbud. Mostly we were trying to avoid hanging our bikes from a hook on the wall. Pros:Its a cheap band to hold your phone. 2 and they never slipped, never came off, never ripped, etc. Not comfortable, the straps are hard to fasten as the holes on the straps are not in a line they were close to the edge of the strap. It isnt a sound bar thatll blow you away during movies. The written directions are worthless. Il mio bambino, che destate non usa altro oltre a questo modello/marca, calza solitamente il 32, ma in questo caso il 31 è perfetto.