UNI S Mod is an updated version of Yocan UNI Mod. It is housed in solid quality Zinc Alloy Shell, delicated in metallic texture and non-scratch. With durable quality and reliable performance, it is built with height slider matching all styles of atomizers. For example, you don not have to worry if your atomizer is too tall or to short, the UNI S will let you adjust the height of any oil atomizers. In addition, the patented universal adjustable width makes it compatible with different oil atomizers. Powered by a 400mAh built-in battery, it is charged via a Type-C port. Besides, it features 10s preheat function and variable voltage option(Low/Middle/High).