Enjoy remarkable sessions with the help of the Key Box VV Variable Voltage 350mAh Battery. Measuring at 1 inch by 0.75 inch by 4 inches, it weight 1.9 ounces making it light and completely easy to carry. Shaped in a innovated key fob box design it has an oil attachment housed within and employs attachment flips out when the button is pressed. It is also 510 thread compatible and supports most oil attachment up to 11mm in diameter as well as compatible with elements rated 1.2 ohm or higher. The Key Box VV Variable Voltage 350mAh also employs an adjustable output control with three different levels, a multi-color LED power light indicator, a powerful lithium-ion battery with a 350mAh capacity and on board USB charging. This device just can’t be beat! Make sure to get the Key Box VV Variable Voltage 350mAh Battery today!