The GPS Action Remote is not specifically designed for the Insta360 X4, but for models such as the X3, ONE X2 and ONE R. However, there is a firmware update for the X4 that allows you to use the GPS Action Remote to control basic functions such as starting and stopping recording. Therefore, you can switch the X4 on and off and start and stop video recording with the GPS Action Remote, provided you have the latest firmware installed.