The Yocan UNI Box Mod is now capable of precise voltage adjustment. This means that you can choose the temperature to run the cartridges at with new buttons laid out conveniently for you to select and change the voltage level.
This product is not designed for use with sub-ohm coils and will "short-out" under 0.5ohm.

Designed ideally for using with THC Oil/CBD cartridges/tanks up to a maximum of 14mm diameter (thickness) and having a minimum height of 35mm.

Thread on the magnetic ring to your tank and pop it in the chamber, set your height of the tank preferred, adjust diameter ring to fit snug around the tank, set voltage to lowest and then turn it up as you use it to find what heat/voltage works best for you and the tank without giving a burnt taste.
Normally 2.0v-3.0v is the popular setting range for most tanks of this nature unless the resistance is lower than 1.5ohm.

Features:

• Size: 75.5*36.5*25.7mm
• Built-in 650mAh Battery
• Adjustable Variable Voltage From 2.0V To 4.2V
• Diameter Adjustment Dial 
• Height Adjust Button Matching Most Styles Of Oil Atomizers (up 14mm)
• E-Juice Level Window
• OLED Display
• 10 Seconds Preheat Function
• Micro USB Port For Charging
• No-Loaded Protection
• Low-Battery Warning
• Short Circuit Protection

Package Includes:

• 1 x Yocan UNI Pro Box Mod 
• 1 x 510 Magnetic Ring (attaches to your tank/cartridge)
• 1 x USB Charging Cable  
• 1 x User Manual