Usogood Binoculars for Adults with BaK-4 Prisms & FMC Lens, 12x50 Green Binoculars for Bird Watching Traveling Hiking Hunting and Stargazing. 【Super Bright and Clear View】The binoculars for stargazing adopt FMC fully multi-coated optics and phase coated 16.5MM BaK-4 prisms, provide superior 99.9% light transmission.
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