Powered by Honeystick technology, the B-buzz'n Slim VV Twist 510 Battery is a variable voltage push button vape pen. In order to change the voltage of this 500 mAh battery, you simply turn the knob on the battery's tip. With the push of a button, you can turn on the preheating feature. For those looking for a simple, straight-forward design with the power to vape the thickest of concentrates, look no further than the B-Buzz'n Twist VV Vape Pen, which is currently a hit on VapeBatt.