Vireo Dual Time

Vireo means powerful and fresh. The otherwise seemingly unassuming sparrow species of the same name is remarkable for its unmistakable and indefatigable song. Of course neither the Vireo Chronograph nor the Vireo Dual Time can sing or fly. But powerfulness, freshness and a pleasantly reserved appearance are definitely attributes that might apply to both.  
The most notable feature of the Vireo series is its inner dial ring. In the Vireo Chronograph it carries the chronograph display. In the Dual Time it carries the names of cities in different time zones around the world.  Corresponding with its functions, the Vireo Dual Time requires two crowns: The upper crown of the Dual Time serves to adjust the inner ring with the time zones. The lower crown is used to adjust the time and date, as well as the additional time zone hand.