The AltimeterOne altimeter has undergone a significant upgrade modification to make it even better. It now displays either English or Metric units, plus it has a low-battery icon that shows when it is time to recharge the unit. In addition, it also has a special mode that allows you to see the current altitude in real-time. This mode is great for educators, as it will show the students how the pressure changes with altitude. In other words, you can watch the altitude change as you ride up in an elevator! Or you can turn it on and see how high you've hiked up a hill. This video goes through the new features of the latest version of the AltimeterOne so you can see it in action.