10 x 42 mm Porro Binocular

The other 2

Same essential product. Here's how they ranked, and why you might still pick one.

2
Barska — Barska 10x42 WP Blackhawk Water Proof Roof Prism Binocular with 6.6 Degree Angle of View, BlackTop pickvalue 54/100
$92.99
3
Nikon — Nikon Action 10x42 Porro Prism Binoculars with 6.8 Degree Angle of View - Blackvalue 27/100
$106.49

Why these count as the same product

Matched on key specifications: Magnification=10, Objective Lens Diameter=42, Prism Design=Porro