The YOCAN UNI Universal Portable Mod is a easily considered the most useful mod ever made, implementing an adjustable atomizer diameter dial;, 3 voltage output levels, and features an innovative preheating function to coax gentle and smooth draws. Formed from durable zinc-alloy, the chassis of the UNI vaporizer houses an impressive 650mAh rechargeable battery, designed to last the entire day between charges. Located at the top of the UNI is an atomizer diameter adjustment dial to change the diameter of the opening for the cartridge. Along the side of the UNI is a juice viewing window to see the remaining level of the cartridge, while underneath is a sliding adjustment knob to raise or lower the level of the magnetically attached atomizer.