This grip is specially designed for the Sony A6500 mirrorless cameras. It is equipped with an alternate release button for comfortable shooting in a vertical position. The power grip can hold one or two NPFW50 batteries to extend your shooting time. Two NPFW50 battery trays are included. So you can pre-load the spare tray and change batteries ultra fast! Dimensions: 5 1/8" x 2 1/4" x 3 1/2" (130 mm x 57 mm x 89 mm) Weight: 4 3/4oz (135 g) (with one battery tray installed and no batteries installed)