The Tronian Rhotron is affordable yet comes with 4 temperature settings ranging from 2.7 Volts to 4.2 Volts that allow users to customize their settings. Lower voltages give a better taste to the vapor produced, while higher voltages create larger clouds. To help users identify these settings, the Rhotron is equipped with 4 different colored LEDs on the front side of the device. Each LED corresponds to a specific setting. During the charging process, the LEDs will illuminate in orange to indicate the battery level. When the battery is low, all lights will flash, and when fully charged, they will remain solid.