"Intelligent" - Preselects a designated wattage environment depending on the resistance reading and caps the maximum wattage environment to prevent burning the coil. ** Also when the firing method is highlighted, press and keep both left and right directional buttons to cycle by way of UI shades But wait around, https://geekvapezmaxtan92333.mdkblog.com/37260713/an-unbiased-view-of-geekvape-h45-classic