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Notice: Innokin requires a picture of Serial Number before providing replacements (due to counterfeits in market). We suggest you keep the packing boxes after receiving the package, or take a picture of SN before you discard it. Thank you!
The Cool Fire IV is a 40W box mod. It is different from other Cool Fire Mod. It has variable voltage 3v-7.5v, variable wattage 6w-40w, and has a large battery capacity. The Cool Fire supports clearomizer resistance 0.3 ohm(minimum).