Power Output: 550W Max Power Voltage:44.08V Cell Type: Monocrystalinline (182x182mm) Number of cells: 144pcs Dimensions: 2288 1138 35mm Frame: Anodized Aluminium Alloy-silver Sheet: white Connector: MC4 or MC 4 comppatible Cable: 0.9m Packaging: 2pcs into one ctn box