With a revolutionary heating element and comprised of a unique structure for a longer life cycle, the Vaporesso Ceramic cCell coils are a step in the right direction. Wicking is composed of porous ceramic with a coil integrated within the center vertical hole while the ceramic is wrapped in organic cotton to keep juice flow even and consistent. Juice goes from cotton, to ceramic, then to the coil. The ceramic design improves life cycle as well as a cleaner and saturated flavor. Single unit 0.6 ohm.