The Kanger EMOW starter kit features a 1300mAh variable voltage battery. Voltage is adjustable at 3.7, 4.2 and 4.8 volt levels, with each power setting indicated by a unique LED light colour for easy recognition. The EMOW battery comes with a matching Aerotank Mow tank that can hold up to 1.8ml of e-liquid. The tube is made of Pyrex glass so it can withstand super strong flavors. Airflow can be adjusted with soft turns of the rotating dial.