The Twister is a 24mm diameter vape pen mod that stands at 101.6mm tall and has a 24.7mm base. This device uses the Freemax Twister Chip which has a 5 to 80W output, 0.5 to 9.0V output, 1.0 to 3.0A output, and a 0.1 to 3.0 ohm atomizer resistance. The wattage output can be adjusted with a ring at the base of the device in 5W increments. The Twister’s built in 2300 mAh battery can be quickly recharged through the micro USB port. An LED light indicator around the single firing button shows battery life: green for 100 to 65%, yellow for 65 to 30%, and red for 30 to 0%. This light also shows current charging mode: blue light will flash when the USB cable is initially inserted and will switch to red when charging. The light will switch off when fully charged. Freemax has given the Twister overtime protection, overheat protection, overload protection, overcharge protection, and short circuit protection.