The Smok Stick One Plus Starter Kit is an improved version of the Stick One Basic from Smok and features a battery capacity of 2000mAh, Smok Micro TFV4 3.5ml top-fill sub-ohm tank and simple easy functionality and features. One button operation and micro usb charging featured with this device. The Smok Micro TFV4 is the perfect match up for this pen style battery and uses Smok Micro coil heads. The Smok Micro tank features adjustable airflow at the tank base and drip tip base and ensures maximum control over vapor production. This all-in-one starter kit is sure to deliver more vapor output then most comparable devices in its class.