GoPro Hero4 Black review: Smooth 4K video that's still the best in the category - CNET
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GoPro Launch Hero4 Action Camera | Cross Country Magazine – In the Core since 1988
GoPro Hero4 Black Review - Review 2015 - PCMag Australia
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GoPro HERO4 Black Music Edition Action Video Camera - Nearly New | Gear4music
Testing the new GoPro Hero4 Black and Silver - RevZilla
GoPro Hero4 Silver & Hero4 Black In-Depth Review
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