How should choose between SV47, SV202, and SA205 binoculars? What are the differences between them? 

How should I choose between SV47, SV202, and SA205 binoculars? What are the differences between them?
Are you a bird watching enthusiast? Do you want to be close to nature? Do you want to hold binoculars to admire beautiful birds? SV202、SV47、SA205 binoculars will be your good choice.
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