A:AnswerI looked the OtterBox wed-site and they had the same question asked. There customer service answered that this case would fit the 5th and 6th generation ipods.
A:AnswerCheck this website: https://everymac.com/systems/apple/ipod/ipod-faq/differences-between-ipod-touch-5th-gen-6th-gen.html. Basically, the design of the back of the iPod will indicate which generation it is.
A:AnswerThe front viewer is a circle, however, it is large enough not to obstruct the view of the front camera lens; the back camera viewer is approximately an inch and oval shape with raised edge to protect the lens and this does not in any way impede the view of the camera either. I hope this was helpful.
A:AnswerReally? I can't speak for the blue or green ones, but the black case seems to work just fine. I've dropped it several times and so far so good.