All Sets can be loops and you can even choose a custom delay duration before the Set will play again. This delay is associated with each Set, so you can program the delay specifically for the Sets you use the most. Pick your favorite background image to customize the App from 5 pre-selected images taken in the field. The App supports the use of a bluetooth speaker (if you have one) to play the Sets at a distance from your location in addition to using the speakers on your phone directly. Supports a 'dark mode' that will reduce the brightness of the screen, reducing any light pollution that might otherwise be a problem in a low light situation.