The Canon BG-E20 Battery Grip give longer shooting times and improved control in portrait orientation. It is designed for EOS 5D Mark IV DSLR and able to hold up to two LP-E6/LP-E6N Li-ion battery packs. This grip will effectively double your shooting time. It features vertically-positioned controls, including a shutter release button, a multi-controller and an AF area selection button. The battery grip is constructed from magnesium alloy to match that of the 5D Mark IV and is both dust and water-resistant. It also features a camera alignment pin hole for use with certain video heads and quick release plates.