Model number alcdb-401. The LCD Touch BacPac mounts seamlessly to select GoPro HERO cameras, enabling monitoring and providing an intuitive way to access the cameras menu. You can use it to frame up shots before and during shooting as well as play back what youve already shot - including slow-motion replay. To operate the controls, simply tap and touch the screen - and with the HERO4 you can even use swipe gestures for faster navigation.