The Shuttle is a new mod from Smok. It's a variable wattage mod that's very simple and easy to use. It takes a single 18650 battery, which will last most users all day, and is made from high-quality stainless steel. The Shuttle features a spring-loaded positive pin to ensure a solid connection and increasing the longevity of the mod. It will come with two top caps. One will expose the eGo threading so you can use bottom-coil clearomizers and other eGo-threaded atomizers. The other top cap wil cover this threading to give the device a better look with 510 atomizers. To adjust the wattage, simply turn the dial on the side of the mod. Wattage is adjustable from 6 watts to 15 watts. Five clicks of the firing button will turn the device on or off. Lastly, the bottom cap also has a spring-loaded contact that keeps the battery secure without putting pressure on the internal electronics. The Shuttle is a great, simple all-around mod, perfect for anyone looking for a no-frills device that can deliver some power!