The Off Stamp X-Cube is not compatible with the SW-series Off Stamp and is upgraded in terms of flavor, performance, and user experience. This kit contains both the battery dock and the detachable disposable pod that holds 18ml of 50mg nicotine strength e-liquid.

Once you have gone through the first 35,000 puff disposable which is included in the kit you can save money by purchasing the disposable vape component while reusing the battery. 

The concept of the Off Stamp X-Cube Crystal Kit is the same as the SW-series. Your first purchase should be the modular Off Stamp X-Cube Kit or Off Stamp X-Cube Crystal Kit, which includes the battery/charging dock, and the pre-filled disposable vape pod.