I bought this for my boyfriend - a keen amateur photographer - and he absolutely loved it!
Although just thick plastic moulding on the outside, there are nice little details on it, like a rubberised 'zoom' ring, little raised buttons (which do not move, but that's wise as they'd only harbour water/liquid when you rinsed it) and realistic print. I'd mistake it for the real thing for sure. The lid is a nice touch too; although we've not tested how leak-proof it is, I reckon it'd survive a gentle commute.
The stainless steel inner is a wise move too; there are some models on-line that don't have it - I'd avoid them like the plague. It's worth paying more for a decent one, and this is one of them.
In a nutshell; this is well-made, realistic and fun novelty item which will be in use for years!