The Yocan Uni Pro is the update on the blockbuster Yocan Uni cartridge battery mod and now our friends at Wulf Mods have put their colorful twist on it. You still have the revolutionary variable diameter adjustment to fit almost any wax cartridge out there as well as the height adjustment allowing you to easily use different size wax carts. The tried and true 510 Thread Magnetic Connector Ring is back ensuring compatibility with almost any 510 thread wax cartridge. The Uni Pro now has a beautiful OLED display that allows you to adjust the voltage between 2.0V and 4.2V in 0.1V increments! The Uni was easily our favorite wax cartridge vape with its innovative features, but the Uni Pro really blows it out of the water. Features Variable Voltage Variable Diameter Adjustment Cartridge Height Adjustment Specifications Battery Capacity: 650mAh Battery Charge Type: Micro-USB Display Type: OLED Voltage Range: 2.0V to 4.2V Preheat Duration: 10 Seconds In The Box 1 Yocan Uni Pro Cartridge Battery Mod 1 Instruction Manual 1 USB Cable 1 510 Thread Magnetic Connector Ring