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A blu® electronic cigarette simulates the smoking experience without the ash or lingering smell associated with traditional cigarettes. There are two main components: the Rechargeable Device (battery) and the container for our flavored liquids. When you inhale on the e-cig, the Rechargeable Device is activated. This action heats up the e-liquid in the container and it’s then converted into a vapor. You inhale and exhale this vapor.