What does the "Collar" button under "Settings" do? Follow Halo Team March 25, 2021 18:46 Updated Environment Halo App Answer Under Collar, you can add a collar, edit a collar, and delete a collar. Related articles How to connect my collar to WiFi I have a growing dog; What size Halo Collar should I get? How to manage Prevention Feedback and Encouragement Feedback How to attach the Halo Collar to the provided strap What is the About button? Comments 0 comments Please sign in to leave a comment.