The Xen is the first disposable E-Cig that utilizes nicotine salts.
The Xen is available in one strength - 50MG (5%)
There are approximately 400 puffs per device.

All the E-Liquid in the Xen is manufactured in Los Angeles, CA - not in China. 
Our nicotine salt is a proprietary blend that we specifically formulated for the Xen.