This is the second time in owning these. Since I have just recently bought this, I cant speak of its durability. The first is plugged into a normal outlet, and it was very easy to install. Sennheiser youre spoiling me! Cute with shorts or skirt or leggings . Make sure when putting in the speakers that you put them in a spot your chin strap base doesnt cover or fold onto, itll severely dampen audio quality. - Distance: They do work from quite the distance from your phone but theres some other things that ill touch on - Long Battery life: I bought these about 2-3 weeks ago and still havent charged the case and it hasnt indicated red at all. I recommend that a latch or clasp is connected to the top and bottom of the silicone case to ensure that the top doesn?t ?come off? or if it stretches over time, it has an attachment to stay connected and in place. Great, comfy! I used a 1/2? scrap wood I had on the inside, pre drilled and used the screws that came with.