Solar charging was first introduced on the Garmin Fenix 6 series, and has been added to the Garmin Instinct and Enduro series. Garmin Fenix 7 Pro: Price Comparison. $699.99. View. $799.99 Both the Fenix 6 and 7 come in the following sizes which offer the same resolution on either model: 42mm – Resolution: 240×240 pixels. Screen size: 1.2”. 47mm – Resolution: 260×260 pixels. Screen size: 1.3”. 51mm – Resolution: 280×280 pixels. Screen size: 1.4”. The weight ranges on the Fenix 6 are quite similar to the Fenix 7. ufZawY.