I bought this with a Suunto Vyper Novo after I watched the video on simplyscuba. and the blurb says that it was suitable for Zoop and Vyper models.
Now, I can't comment on the Zoop, but I can for sure say that this piece of kit is NOT suitable for use with a Vyper Novo.
There is a slight curve on the back of the computer, that makes it impossible to straighten the red plastic strap enough to allow it to be screwed to the retractor unit. I would imagine that it would be possible to force the issue, but I doubt very much that the red plastic tab would last very long before it split at the place where it is screwed into the unit.
Unfortunately, I'm not in a position to return it, as I travel a lot and packed both the computer ( after checking that it was working) and the retractor with the intention of fitting it at a later, less busy, date.
It won't break the bank, and I'm not complaining. My own fault for not checking before throwing it in my case.
I just wanted to let people know that it doesn't work for the Vyper Novo, at least.
It might be worth Simply Scuba doing a check to see what it will work with and what it won't, so as to be able to offer accurate advice to customers.