Teardown of an electronic USB cigarette lighter.

I've seen these things popping up on ebay for a while, and when someone mentioned them in the comments for another video I thought I'd get one and take a look at it.
They're basically a USB chargeable device about the same size as a normal lighter. When you press and slide the central button in one direction the USB charging plug slides out. When you slide it in the other direction a ceramic plate with a spiral heating element slides out and when pressed forward it starts to glow to light your cigarette.
The circuitry inside is very similar to that of an electronic cigarette. It has a six pin xm7100 control chip with some support components, a lithium cell and the heater assembly.