The electronic marine barometer is designed specifically for the mariner. Not only does it show current pressure on the large display, it also displays historical information on a much more expanded scale than most electronic barometers which makes it perfect in a situation where there is a change of watch and the new person on duty can see the changes that have occurred over the last 48 hours in 30 minute increments.
NEW FEATURES:
Better user-friendly menu!
Can be powered with a standard mini-USB cable! (cable not included)
Auto-shut off when batteries get low to prevent battery leakage!
Accurately detects pressure changes to within +/- 0.5hPa