AKASO EK7000 4K WiFi Sports Action Camera Ultra HD Waterproof DV Camcorder 12MP 170 Degree Wide Angle

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[Professional Binoculars]-Design of Bak-4 prism and multilayer coating provide better image brightness, contrast and quality. Compared with Bak-7, Bak-5 prism has better performance.Its refractive index is higher and it can effectively avoid dark angle.So that its imaging is more clear and bright.
[20×50]- The large eyepiece has a better view and a wider viewing range.The larger objective lens has more light, higher brightness and wider field of vision.If the objective size is less than 41mm, then there will be dim vision and dark corners.

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【 Powerful 10×25 Binoculars 】10x useful magnification with 25mm objective lens provide high definition image at 1000 yards out under 362 feet wide view. Allows you get amazing clear details from the bird watching, wildlife, exploring.
【 Quality Optics & Weak Light Vision 】Fully multi-layer coatings green film objective lens and roof prism guarantee the excellent light transmission and color fidelity, reduce chromatic aberration and offer a clear, sharp and vivid image with bright colors. It can be used at night, but not available in the darkness.