Citizen Campanola BU0020-71E Eco-DriveModel: Campanola BU0020 71E Eco Drive with Moon Phase and Triple Calendar Year: February 2017 Features: Brand. The BU0020 71E is part of Campanolas current collection. Available to buy new for 363,000 yen (almost $2,500), these celestial offerings from Citizen continue to be great value propositions on the secondary market for anyone brave enough to try a slightly unusual design. Value. Much like the golden Tenmanboshi, this watch is part of