Designed for advanced vape connoisseurs, the Fu Chai Mechanical Mod from Sigelei in an unregulated device that is capable of producing immense clouds. Constructed from solid stainless steel, the Fu Chai boasts unique aesthetics and a high-quality copper components for maximum safety and performance. This mech mod is features fully adjustable contact pins, as well as a recessed firing button with locking ring. The Fu Chai (like all mechanical mods) is designed for advanced users, and should not be used by anyone without proper product knowledge. Required 18650 Li-ion battery is not included.