The bluephase 20i runs on battery power. It is designed to provide patients maximum levels of comfort. Its highest point of light output is 2,000 mW/cm2 and has small periods of curing. It does not exceed 5 seconds of light or dark. At its greatest capacity, it is helpful when used consistently at optimal performance level. An advantage for the bluephase 20i is a short curing time due to high intensity polywave LED with a halogen-like broadband spectrum of 385 to 515. It has a click and cure feature for corded operation in case of emergencies. It has an integrated fan that runs continuously for cooling and is cemented to IPS Empress. This allows IPS e.max restorations to be polymerized in a short amount of time.