Features:
New Ultra black design, fully multi-coated
15mm focal length, 2" fitting diameter
This super ultra wide angle eyepiece has 80 degree field of view
Standard female thread to fit a filter etc at the rear end
6-Elements in 4 Groups Design
The inside of the adapter is fully threaded to minimize reflections
Coma-free View out of 72% of the field radius
Great Contrast and Color Correction
Packed in a protective plastic case