The Insta360 Quick Reader for your X4 action camera allows you to record footage onto the module and transfer it to your phone or computer without using up additional camera battery. By inserting a microSD card into the reader and plugging it into the USB-C port of your X4, you can store data directly onto the device while you shoot. To preview and edit the footage while on the go, simply insert the Lightning or USB-C connector into a compatible mobile device and open the Insta360 app. Files can also be transferred and accessed through a personal computer.