The GoPro LCD Touch BacPac features a removable touchscreen display that attaches seamlessly to the back of your GoPro camera that allows you the convenience of touch control and display. You can play back videos, look through photos, listen to audio, and even play back in slow motion. You can see the picture on the display screen before taking it to make sure it's framed perfectly. Easily adjust your settings by a touch on the screen. When using the LCD Touch BacPac with your HERO4, simply swipe the touch screen to select modes and navigate menus.