The Rokin Mini Tank is a discreet and portable oil vaporizer. At less than 2 high and 1 wide, it is the smallest vape on the market and fits in the palm of your hand! The included top airflow cartridge can work with all different viscosities of oil and with a removable front end, the Mini Tank can fit ANY size cartridge no matter how tall or wide. The 510 thread connection will ensure compatibility with any other 510 threaded cartridge on the market, including Rokins EASY FILL oil cartridge. To operate Mini Tank all you need to do is turn it on and go. It features a preheat function (3 clicks) that warms up your oils for use before your first use and a large 500 mAh lithium ion battery. The kit also included a lanyard and a micro USB charger. The Mini Tank may be small, but it packs a big punch!