The Smartvape is a very compact Bluetooth-enabled mod. It uses a single 18650 IMR battery, yet it's very small. This mod is designed as something of a hybrid between a box mod and a tube mod. It's crafted from a lightweight aluminum and is very easy to carry in a pocket or bag. The Smartvape is a variable voltage mod that is adjustable between 3 volts and 5 volts in .1-volt increments. All your settings must be changed through a companion app which is available on the App Store for iPhone, and Google Play for Android devices. Through the app, you can change your voltage, view your coil's resistance, see your output wattage, and check data regarding your vaping habits. You can also set up a vaping "plan" that allows you to limit your puffs per day in order to gradually cut down on your vaping. This package also comes with a bottom-coil tank with adjustable airflow control and 2 replacement coils.