Atrend Bbox SC6x9PRB Pair of 6” x 9” Pro Audio Tuned Speaker Enclosures

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Spotting Telescope perfect for astronomical observation and land viewing – 70mm large aperture objective lens makes the images brighter and clearer, with 45 degree diagonal prism can always achieve the erect images, includes two 1.25″ Kellner eyepieces (K20mm & K9mm) and 3X Barlow lens which you can enjoy the magnification from 20X to 132X.
10X50 Full-size HD Binoculars with wide field of view & fully multi-coated optics Bak4 Prism ideal for Travel, Bird watching, Sightseeing, Hunting, Wildlife watching, Sports & Concert events, etc.

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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.