This morning I was packing my backpack. MY SE was in a front pocket powered off. Suddenly I hear something beep from the backpack. I look through it and the SE shows the SOS counter with 3 seconds left. I barely could turn it off on time. Seems something pressed the SOS button despite it being locked. This is a little disturbing because the heaviest item in the backpack was a 3 liter bladder and not much else. To avoid this happening again I am thinking about getting a hard case. Does anyone know of any that are lightweight and fit the SE? I guess it's OK if the antenna sticks out. Or is there another way to block the SOS button better?