Junghans watch voyager mega mf 056230401 this junghans voyager mega mf watch combines the latest technology of radio controlled movements with a lightweight titanium case and open case back design the ingenious high precision radio movement was inspired by the first radio controlled watch designed by junghans in the 1990s that completely revolutionised the timepiece industry the sleek titanium and pvd coated case of this junghans voyager mega mf watch measures to a comfortable 42mm width