H2 Single Electronic Cigarette Starter Kit: The completely clear and elegant H2 Single Electronic Cigarette Starter Kit is a 1.6 ml bottom feeder with a scale measure on the clearomizer. The H2 Electronic Cigarette is very simple to use and does not leak or drip, The H2 Single Electronic Cigarette Starter Kit is great for beginner to pro vapors and provides a smooth and constant vapor everytime.