The Yocan UNI Pro Box Mod features several upgrades and has a universal compatibility with all oil atomizers at all lengths and sizes. Yocan UNI Box Mod is now capable of precise voltage adjustment. Equipped with new buttons laid out conveniently for you to select and change the voltage level, the Yocan UNI Pro Box Mod delivers precise temperature selection without the fuss. To match these new enhancements on the Yocan UNI, we’ve made the pro version look sleeker and sharper than ever. We've replaced rounded edges with sharp corners for a more aggressive look. Something that resembles the actual power and capability that the Yocan UNI Pro Box Mod offers.