SIGHTRON Starry sky observation opera glasses Stella Scan set 2X40 monocular binocular SET052

Objective lens effective diameter: 40mm Lens coat: Fully multi coat Eye relief: 10mm Shortest focusing distance: approx. 2m Eye width adjustment range: 56.5mm-71.5mm Body size: approx. 41X50X121mm (binocular type) Body size: approx. 53X37mm (monocular type) Body weight: approx. 230g (binocular type) Body weight: approx. 110g (monocular type) Accessories: Exclusive case, manual and warranty