GoPro Hero4 Black review: Smooth 4K video that's still the best in the category - CNET
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Amazon.com : GoPro Hero4 Black : Electronics
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GoPro Hero 4 Silver vs Hero 4 Black - What's the ACTUAL difference? - YouTube
GoPro Hero 4 Black Serves up Double The Performance, Touch Screen, 4K & More - Bikerumor
GoPro Hero4 comparison 2016: Session vs Black vs Silver | Mobile Fun Blog
GoPro Hero 4: Everything You Need to Know - Outside Online
GoPro Launches HERO4 Session: the Smallest, Lightest and Most Convenient GoPro, Yet | GoPro
When it comes to GoPro's new Hero4 camera, silver is the new black | Engadget
GoPro Hero4 Black And Silver Review: Still The Best Action Cams
