GoPro Introduces HERO4: The Most Powerful GoPro Lineup, Ever | GoPro
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Amazon.com : GoPro HERO4 Black 4K Camera/ Music Edition : Electronics
Amazon.com : GoPro Hero4 Black : Electronics
GoPro Hero 4: Everything You Need to Know
GoPro Hero4 Black Edition review | Stuff
GoPro Hero4 Black review: Smooth 4K video that's still the best in the category - CNET
How to get best quality from GoPro HERO4 Black with new firmware – analyzed & reviewed | CineD
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GoPro Goes 4K with HERO4 Black, Adds Touchscreen to HERO4 Silver, and Debuts $130 Entry-Level HERO | PetaPixel