MIG VAPOR Migi Armor | 3 Temp Oil Cartridge BatteryThe Migi Armor is the best battery for oil cartridges for a lot of reasons! The temperature control feature allows you to choose a mild, medium, or more intense vape session. And it is so easy to use! Change between settings by clicking the power button 3 times. Scroll through the color coded temperature options. The green light indicates 3.5V output for a nice, mild vape. The blue light is set at 3.7V and the red fires at 4.0V for a more intense hit.