On the new Promaster Navihawk, the outer scale depicts airplane fuel and the inner scale depicts speed. In theory, it can calculate fuel usage over time and distance given a known air speed.

For under $600, the Citizen Promaster Navihawk is an affordable chronograph that will scratch the luxury pilot watch itch. For under $600, ...

Citizen launches a new hero watch, meet the Promaster Navihawk GPS SS16 Collection is striking, pretty smart, and has an awesome name When you purchase through links on our site, we may earn an ...