The Lookah Unicorn Electric Dab Rig is one of the best vaporizers for concentrates. This makes it one of the most efficient ways to vaporize your concentrates. They are designed to be used perfectly in one hand.
The Lookah Unicorn has a 1900mAh battery that lasts really long. It toggles through three different temperature settings from low (green - 3.3v), medium (blue -3.6v), high (white - 4.2v). The interior glass comes with a percolator too.