This remote allows you to wirelessly release your camera's shutter and start/stop video via Bluetooth within a 32 ft/10m operating range at any direction. It features auto focus, shutter release, locking bulb exposures, start & stop video recording, zoom in and out control (only for Sony power zoom lenses). The W and T zoom buttons can be also used for adjusting camera focus when the lens is on manual focus mode, this is awesome for macro work and gives you a precise ability to focus stack accurately. It replaces the Sony RMT-P1BT and works with select Sony cameras as below: Sony ZV-1, RX100VII, A6100, A6600, A7C, A7S III, A7R IV, A9 IISony A9 (with Ver. 6.00 firmware update) Sony A7 III, A7R III (with Ver. 3.00 firmware update) Sony A6400, DSC-RX0 II (with Ver. 2.00 firmware update)For proper use, you need pair the remote with your camera, below are the steps for reference:(1) Make sure the lock switch on the left side of the remote is NOT in lock position (2) Menu - Network - Bluetooth setting - Bluetooth function - ON (3) Menu - Network - Bluetooth RMT Ctrl - ON (4) Menu - Network - Bluetooth setting - Pairing (5) Hold down both the shutter button and Zoom T buttons on the remote simultaneously for more than 7 seconds (6) When a confirmation message appears on the camera screen, tap "OK" and it will appears "Paired"User notes:(1) The zoom buttons on the remote only works for power zoom lenses when used on mirrorless cameras. (2) The zoom buttons on the remote will not work when taking RAW or RAW + JPEG. It only works when taking JPEG. (3) You cannot use GPS location tagging when using this remote. (4) If you turn off the camera and then turn it on again, you need to wait for a few seconds and then activate the remote by pressing one of the buttons on the remote.