This Variable Voltage Battery w/ Preheat works great with prefilled oil cartridges or wax atomizer tanks.

Offers 3 color coded voltage settings: Red / 4.0V, Blue / 3.7V, Green / 3.4V. Click 5x to turn on, click 3x to change voltage, click 2x to preheat for 15 seconds, click 1x to use.

Note: Cartridges sold separately. 

Multiple color options available.

• 350 mAh variable voltage vaporizer battery
• 3 voltage levels; Red/4.0V, Blue/3.7V, Green/3.4V
• 15 second preheat time for peak performance
• Works with thick oil cartridges and wax tanks
• Universal 510 threading
• USB charger included