Muehle glashuette watch terranaut ii trail m1 40 341 nb precision timekeeping is an important factor whether on land water or in the air the watches in our terranaut series meet this requirement not only in terms of their design but also where their name is concerned with the latin word terra which means land or earth combining with our nautical tradition to produce the name terranaut the design of the terranaut watches bears a strong resemblance to that of aircraft cockpit instruments