Junghans Watch Milano Mega Solar 56/4628.44. Calfskin strap with stainless steel buckle A Milanaise strap is also included. This Junghans Milano Mega Solar watch combines the latest technology of multi frequency radio controlled solar movements with a lightweight stainless steel and open case back design. The ingenious high precision radio solar movement means this watch is completely independent of limited energy resources and provides exact timekeeping on three continents using only the power of sunlight.