GoPro Hero4 Black review: Smooth 4K video that's still the best in the category - CNET
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Finally ready to upgrade from my Hero 4 Silver. Which model do you recommend to upgrade to and why? : r/gopro
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Amazon.com : GoPro Hero4 Black : Electronics
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Gopro Hero 4 BLACK Edition 4K Action Camera Camcorder CHDHX-401 - Walmart.com
Amazon.com : GoPro Hero4 Black : Electronics
GoPro HERO4 Review - Videomaker
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