The ijust2 has a power output of about 60W-80W and is not adjustable. With continuous use over a short period of time, a higher wattage e-cigs can get hot. This design exposes part of the atomizer tank to the open air to reduce overheating. This design can also work for other models with a 22mm diameter atomizer tank. This page is a three part photo essay: * Part I--Building the bottom * Part II--Building the top * Part III--Putting it together.