I dont have an ultra, but I am adamant about taking care of my things/protecting them so they stay in new condition. Alot of people in this thread seem to be against cases, covers, etc but I think you should invest in it! It provides protection, personality, and peace of mind. I currently have an SE Gen 2 with a dual rubber case screen cover. I don’t wear it daily, but If i ever start to use it more often the first thing I will be doing is switching to a hard plastic case and an individual protector. I do like my current protector because it covers the entire watch & is clear, but I find screen to be less sensitive with it and water tends to get trapped in between the case and watch.