The VG-C3EM Battery Grip from Jupio is designed for the Sony Alpha Sony a9, a7 III, and a7R III Cameras. It holds up to two NP-FZ100 battery packs, effectively doubling your shooting time, while providing increased comfort, stability, and control when shooting in vertical and landscape positions. A heavy-duty wheel lets you lock the unit tightly to the camera, and this ergonomically-designed grip also features a shutter release button, a main command dial, a sub command dial, a joystick, an AF-on button, an AE lock button, a magnify button, and a multi-function button.