The M5 Tank is a step forward in e-cigarette technology, designed for those who want a great vape with minimal downtime. This tank can be fully disassembled for easy refills and cleaning, and the core (heating coil) can be replaced when it begins to burn out. You'll never have to throw this tank away - simply swap out the core and continue vaping. Please note that the M5 Tank can be used with our m-Power batteries, m-Power USB VV Passthrough, or any EGO-type e-cigarette battery. It is not compatible with our Slim Series (Mini, Protege, or Elite) batteries.