The RSST from Smok is an awesome genesis-style rebuildable atomizer. It features a polypropylene tank, so it is more resistant to ‘tank-cracker’ juices. It also has an insulated wick-hole, which makes it easier to build coils without causing them to short. Included with the RSST is a small bag with some spare parts.
The RSST, along with any other RBA, is an advanced user device. It does not come with a coils built, you must build it yourself (hence, rebuildable atomizer). It can be built with ekowool or stainless steel mesh, along with kanthal resistance wire. Remember to always have a multi-meter when using RBAs, to check for shorts, and remember to always stay within the amp limit of the battery you’re using.