Yocan UNI Box Mod is an innovative VV Box MOD with small and discreet appearance. Working with built-in 650mAh battery and adjustable three levels voltage indicator light, the Yocan UNI MOD can bring you stable vaping experience. The mainly distinctive feature of the UNI is that it comes with the adjustable knobs located just right beneath the lips of the cartridge chamber. You don’t have to worry if the atomizer is too tall or too short. The UNI will let you adjust the height of any oil atomizer.