Much cheaper than std Nokia battery from Nokia, delivered quickly, and it works - keeps my Nokia 2670 going for at least 3 days, which is at least as good as its original battery when bought new.
However, it is a generic battery I think, no hologram - that in itself is fine (as I said, it works well) though I'm mildly grumpy that I was sold it with a picture of a hologram Nokia-branded battery - that may be the fault of Amazon's website, though I have better things to do than find out.