A KR-808D is the manufacturer's reference for the battery used in some electronic cigarette systems, including PrimeVapor's Electronic Cigarette System. A rechargeable litium-ion battery, it is considered the best of breed for e-cigarette use. PrimeVapor E-Cigarette Systems primarily use the KR-808D.
PrimeVapor also uses an exclusive, advanced version of the T-Rex model (DSE-510) known as "the Saturn". The Saturn E-Cigarette Systems are designed for the veteran vaper that is looking for the best vapor and flavor production.