The Bellow is the latest mod made by MadVapes, right here in the USA! This version allows you to change your wattage by using the toggle switch, as well as use the standard menu system. The Bellow uses an SX350 board, and puts out between 5W and 50W of power. It uses a single 18650 IMR battery, and we recommend using batteries with a 20A continuous discharge rate or higher. This mod is made out of either stacked acrylic or wood (depending on your selection) slices to give it its unique texture, with cast metal top and bottom caps that have fantastic detailing. The quick-change battery door is durable and held in place securely when a battery is installed. The device can be charged via a micro-USB cable, or you can open the door and swap batteries. The shape of the mod is a perfect fit for hands of all sizes. The Bellow uses a gravity sensor to change your settings. Press the button 5 times to enter the menu, then tilt the device to either side to adjust your settings, and click the firing button again to move to the next menu option. The Bellow is a unique American-made mod that you can be proud to own!