The Side-Bar is a compact battery fits flush in your hand; with pods snapping magnetically into place. The compact form makes stashing the HYPHEN in your pocket easier than the traditional stick battery, and the pod placement side-by-side with display ensures you always know your level. Speaking of, there are three: Blue: 2.6v, low heat for high flavor and low vapor output Yellow: 3.0v, medium heat for a fusion of flavor and clouds Red: 3.4v, max heat for max clouds Toggle between voltage settings by snapping the pod in and out three times. The voltage will flash on the Side-Bar display screen.