B07WZTD988 QUARKJK Telescope Wide Angle 10X50 HD Hunting Binoculars Zoom High Power Optics Professional Waterproof Sports Telescope BAK4 Prism

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Central Focus roller: Users only need to turn the telescope in the middle circular wheel, you can change the focal length.
Right eyepiece diopter adjustment knob: there may be differences between the left and right eye vision.
50MM large objective lens, high light transmittance, clear and bright image, no color difference, outstanding glimmer effect.
High quality all-glass optics – objective and ocular lenses.Multi-coated ultra-clear film FMC broadband,bright color transparent, high transmittance, no color difference.
Tripod mount hole, can attach the tripod to reduce shock and increase image resolution.