This grip is specially designed for the Canon 6D MK II DSLR camera. It is equipped with an alternate shutter-release button, main dial, multi-controller, AF point selection button, AE lock button, AF start button, AF area selection button, and multi-function button for comfortable access to the 6D MK II's controls while shooting in a vertical position. This power grip can hold two LP-E6 rechargeable lithium-ion batteries at a time. Two battery trays are included. Each tray holds 2 LP-E6 batteries. So you can pre-load the spare tray and change batteries ultra fastDimensions: 6" x 3 3/8" x 4 5/8" (152.8 mm x 85.5 mm x 117 mm)Weight: 10.4oz (295 g) (with one battery tray installed and no batteries installed)