Regulated mods are devices that offer variable voltage and variable wattage, they also come with safety features and power adjustments. These mods are advanced and offer you some protections and safety as most contain a circuit board or chip to regulate the current. Regulated mods are easy to use and can still use sub ohm coils, but give you the safety. If your coil build is too low the Regulated mod will indicate an error and wont allow the device to vape. The same relates to battery safety, if your battery is too low the device wont let you vape, and you will need to change out the batteries. So if your newly into vaping or a long time vaper than a regulated mod is a great choice.