The MM3 60 GA/45 is an evolution of the travelscope concept pioneered by Opticron. Constructed from polycarbonate and lightweight alloys, the super-compact optical system creates a body just 247mm/9.7" long weighing about the same as pair of 42mm binoculars. They can be hand held for crystal clear flat field observation at magnifications below 20x but unlike binoculars deliver magnifications up to 45x for close-up accurate observations at distance.