SIZE: Outside dimensions are 4" wide X 4" tall Inside dimensions are 3 3/8" wide X 3 7/8 tall
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DSLR Coral Viewer with Built-In Acrylic Filter ( Coral Headz )
Q: How many times have you tried to capture your tank in a photo, but it's nothing close to what you see in person?
A: Well now you can with the Coral Headz Coral Viewer with a Built-In Acrylic Filter.
YouTube video demonstrating live the difference between Coral Headz viewer and the standard viewer.
Filmed with iPhone 6 (best in HD)