A wearable 4K Action Camera that was designed to fit around the contour of your head - Yanko Design
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Amazon.com: Action Mount® Helmet Mounts (Flat & Curved) with 3-Way Pivots for Popular Sports Camera, or Other Products. Flat & Curved Mounts with 3m Adhesive, Base Clip, 3-Way Pivots, & Thumb Screw. :
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Amazon.com : GoPro Helmet Front Mount : Tripod Camera Mounts : Electronics