Check the listing for details. Wingspan Optics FieldView 10x4 Compact Binoculars for Bird Watching. Condition: Used. Listed at 84.95 USD. The Wingspan Optics FieldView 10x4 Compact Binoculars are designed specifically for bird watching, making them a must-have for any avid birdwatcher. With a compact design and a 10x4 magnification, these binoculars are easy to carry around and provide clear, detailed views of birds in the distance. The brand's reputation for quality optics ensures that you will be able to see your feathered friends with exceptional clarity and precision. Whether you are watching a bird in the backyard or on a nature hike, these compact binoculars are sure to enhance your bird watching experience.