Underwater cameras get a new power source — sound!

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Deborah Balthazar, Author at Science News Explores

【4K Video & 48MP Underwater Cameras】This underwater digital camera is fully equipped with new upgraded 4K video resolution and 48 megapixels of image

Underwater Cameras, 4K Waterproof Digital Camera 48 MP Autofocus Function Selfie Dual Screens with 16X Digital Zoom Compact Portable 11FT Underwater

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This new underwater camera is powered by sound

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【The 4K video 48MP & Autofocus makes shooting sharper.】- This underwater camera has an image resolution of up to 48MP pixels and 4K video resolution,

Underwater Camera, 4K 48MP Autofocus Waterproof Digital Camera with Selfie HD Dual Screens,11FT 16X Zoom Waterproof Camera with 64GB Card,Fill Light

Sound-powered camera MIT Technology Review

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PROGRACE Kids Camera Waterproof Gift Toy - Children