The Firewood 3 vaporizer is known for it’s huge vapor production and great taste. With it’s convection heating method and 30 sec heat time the Firewood 3 is a solid vaporizer choice for dry herbs. While only lasting around 5 bowls, the battery life is a little weak. The Firewood 4 will improve on the battery situation but it wont be released for another couple months. Recommended load amount is 0.3g.