The Koah KO-VG-C3EM Battery Grip replaces the Sony VG-C3EM and is compatible with Sony a9, a7III and a7rIII mirrorless cameras. It is tripod friendly and works comfortably with vertical or horizontal shooting. This grip features a shutter release, AF-ON, AE-L and multi-selector functions. It increases shooting stability and handle and works with 1 or 2 Sony NP-FZ100 li-ion batteries (sold separately). It doubles battery life, providing the power needed for extended shooting time.