Aquatica 4" Fisheye Dome port #30200 (for m4/3) along with a neoprene cover.
Condition: Perfect. Has barely been used.
Reason for sale: Bought it with the housing. Don't have any lenses for it and got the 8" dome so no reason for keeping both.
Asking price: Goes for $400 (new is $529).
Item is located in Iceland. However, I will be in California in a week (end of May) which makes shipping in the USA very easy.
Can also ship worldwide.