The Kamry K100 is an all metal and all mechanical telescoping e-Cigarette. It adjusts to battery sizes between 18350 and 18650 by simply turning the telescope to the required size.
There are no wires or electronics inside the K101. A bottom mounted button (with locking mechanism) fires the device easily and reliably. The button lock operates by turning the smooth ring clockwise to unlock and counterclockwise to lock.
Included with your K101 is an inline fuse chip which attaches to the top of your battery by a magnet. This helps protect you against any possible shorts since this is a fully mechanical device.
The Kamry K101 and K100 are almost identical. There is very little difference between the devices.