The Yocan UNI S is an innovative Box MOD for oil atomizers that hides the atomizers inside using an adjustable elevator system. The Yocan UNI S is housed in solid quality Zinc Alloy shell, deliciated in metallic texture and non-scratch, provides you the best vaping performance, durable and reliable, which are the key factors behind the vaporizer. Features: Solid Quality-Metallic Texture Adjustable Diameter 10sec Preheat Function (1.8V) 3 Voltage Levels Built with Hanging Hole Type-C Charging Compact and Discreet