The Yocan Wulf UNI S  is another great collaboration between Wulf Mods and Yocan A Comprehensive Look at the Game-Changing Wulf UNI S Adjustable Cartridge Vaporizer The outstanding and feature-packed Wulf UNI S Adjustable Cartridge Vaporizer is a successor to the popular Yocan Wulf UNI. It has improved functionality, a sleek design, and adjustable cartridge functionality that is best suited for vaping oils. This vape cart battery utilizes a compact and efficient design and internal components powered by Yocan including three voltage levels of 2.5V, 3.0V, and 3.5V as well as preheat function for your convenience. Key Features: 3 voltage settings Adjustable height Adjustable width Preheat function Magnetic connection USB-C charging Compact 4" tall The Yocan Wulf UNI S is an adjustable 510 thread vape cart battery that has been streamlined for continuous use. It's a small and portable device measuring approximately 2.3 inches tall.  It's powered by an integrated 650mAh battery with variable voltage ranging from 2.5V to 3.5V including a 2-click preheat functionality of 1.8V to warm up your oil vape cartridges. In true Yocan and Wulf Mods fashion, this cart battery has a user-friendly interface with easy push button operation and an easy-to-see LED indicator light system.  The Yocan Wulf UNI S is designed with a durable Zinc-Alloy chassis for a durable feel and improved protection of your 510 thread vape carts. Loading Cartridge Remove the mouthpiece from cartridge Load the desired amount of oil into the cartridge. Attach magnet adapter to the cartridge and twist on mouthpiece. Place glass cartridge back into cart battery chamber. Enjoy vaping The Yocan Wulf UNI S 510 thread cart battery is a compact, small vape device designed for performance, practicality and user satisfaction.