Vision X-fire is not only kit but it is wooden and has variable voltages.
Vision X-fire can support variable voltage and 1000mah it is hand carved skull shaped pure wooden battery which can be adjustable from 3.3v to 4.8v. It is mechanical mod and very unique in design. You can say that the Spinner 1000mah battery is wrapped in wooden skulls shaped. It works same as any other vision battery is, it has high quality material due to double layers. It has standard eGo 510 threading so you can use it with different atomizers and clearomizers.