The Authentic VapX Geyser Pod System Vape Kit is a true revolutionary device to touch the top technology. Powered by a single 21700 battery (not included), the VapX Geyser reaches a maximum output of 100W. The VapX Geyser is also compatible with 18650 battery (not included, with a sleeve). The VapX Geyser 100W Pod System Vape Kit attaches two pods of 5.0ml 75W Air Pod and 6.5ml 45W Air Pod. The 5.0ml 75W Air Pod is best for Loose MTL / Loose DL vape while the 6.5ml 45W Air Pod is perfect for Tight MTL / Restricted DL vape. The buck-boost converter brings a real stale and consistent output to the VapX Geyser. The VapX Geyser Pod System Vape Kit adopts magnesium alloy construction for a lighter weight. So an external li-ion battery will not make the VapX Geyser heavy in palms.