The Yocan UNI TWIST Box Mod (Canada) is a palm portable box mod with 650mAh battery housed in metallic shell with solid quality. It is befitting successor to the UNI Series like the adjustable width and height, also with new features of good appearance and a twist dial for voltage setting at the device bottom just like its name UNI TWIST. It is a must-have to meet all cartridges vaping needs for consuming concentrates and oils.