The FOUR Vaporizer has a massive chamber. The heat settings are perfect. The battery life is a 2500mah polymer battery. Introducing the newest addition to the Mig Vapor Dry-Herb Vaporizer Family, the FOUR. The FOUR is the new standard of Dry Herb Vapes for 2020, combining simplicity with its single button and 5 heat settings (356F-428F) The Four combines power with variety and simplicity.