Bought this about 4 months ago from Manila, back when it was not properly available in India. Hence my use can state its merits as well as demerits.
Cons:
Silver cam records 4k in 15fps which is not so advisable if you want a high res data, go for black.
Still shots not that crisp and very little help in adjusting(unlike dslr's) but hence its not made for that cant complain.
Not enough mounting options(In the box by default). Which they should look into it.

Now Pros,
Awesome case covers fro...

I owned it few days back and I am highly satisfied with the Camera features and flipkart's fast delivery. Its a real Hero (Y)

when ever i'm trying to take a photo it restarts automatically and i'm very much assure this item is faulty and everytime keep losing wifi signals. and the time i bought it was not sealed properly.

DON'T BUY THIS. SELLER IS BAD. SENDING FAULTY ITEMS

Good original product by flipkart.It's been 3 months using go pro hero 4 black and we have no problems at all.

I purchased it from flipkart and the product was as mentioned brand new and i am very happy with the product. its been 8 month since i purchased this camera and i am loving it so much that i cannot express my feeling in words.