DJI Action 2 Power Module.
This module increases Action 2's battery life, includes a built-in microSD card slot, and can be used with an external microphone. With the magnetic lock, this hot-swappable module can be attached to the Camera Unit, allowing you to get more out of your Action 2. When connected, your Action 2 can film for up to 180 minutes, so you can fully enjoy recording without missing a beat.