I can't understand why my order is in customs now. It's from tx and I'm in LA. I think domestic shipments don't need that.UPDATE:received it.It has a turn on and off button. But it's pretty big. I'll say I'll just use it when i ran out of juice. I can say i has the thickness about 2 N4 back to back.SENT FROM MY RAGING NEXUS⁴ 👍