So like many of you I have all kinds of digital numbers flashing in my cockpit. That included a digital timer to not let me forget about changing tanks. But I found it to be to “ordinary” and it didn’t really draw my attention to something so important. So I got this online and place it on an empty spot next to my VSI and it is absolutely perfect. It is almost impossible to ignore as the red area continues to shrink. It may look a little silly but I think it’s probably the best safety item I have ever purchased. Maybe just too much time on my hands.