The Vaporesso Cascade One with Cascade Mini Starter Kit is a new and intuitive series of pen style devices paired with the Vaporesso Cascade Mini Sub-Ohm Tank. The Cascade One maintains it's pen style figure a smart mechanical style output and utilizes Omni Board Mini. Powering the Cascade One is a built-in 1800 mAh battery and can be charged via USB up to 2A. A battery life indicator can be found on the oversized firing button; Green is 100% to 70%, blue being 69% to 30%, red being 29% to 0%,. Paired with the Cascade One is the Cascade Mini 22mm Sub-Ohm Tank features a expandable tank section, allowing users to use the compact size for 3.5ml capacity, a lift to open top fill system and uses the GTM CCELL and Mesh coil heads. The Top Fill Section of the Cascade Mini are reversed threaded along with the top base for easy cleaning. The Cascade One with Cascade Mini Starter Kit by Vaporesso, with its powerful and convenient design, an interchangeable tank capacity, and upgraded form, makes this kit a great choice for all vapers.