Some binoculars have a zoom function. This means variable levels of magnification instead of fixed. This is convenient, and magnification can be adjusted variably simply by moving a lever.
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Bresser
Zoomar 8-25x25 monocular
( 1 / 5 )
$ 67.00
ready for shipping in 1-2
weeks
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National Geographic
Zoom binoculars 8-24x50
$ 101.00
ready for shipping in 1-2
weeks
