Brunton Echo Compact 8x22 Binoculars 5057 Brunton offers a fully coated BaK-4 prism glass experience in a small, sleek package. Brunton Echo 8x22mm Compact Binoculars are introductory binoculars that stands alone as an affordable alternative in the Brunton Echo Binoculars line-up. These Brunton Binoculars come with a neck cord and a carrying case and baked by Brunton 's One-year Warranty.