I am in a wheelchair rehabbing a broken leg. Even when I am out of this chair, I will never run a marathon, climb a mountain, swim an ocean, hike a rainforest, cross a desert, or explore the depths of any sea. Yet I insta-bought the Ultra to arrive on the 23rd. If an active person's batter lasts for 36 hours, mine will last for weeks. 😀 I clearly need a dive computer for those long evenings in the hot tub, that I don't yet have. I suspect I should be ashamed of myself.