Brunton Epoch Compact Binocular 8X21 Compact binocular with 21mm objective lenses and 8x magnification SF prism glass with multiple coatings for true, vibrant color transmission 393-foot field of view at 1,000 yards; locking 15mm eye relief system Waterproof alloy frame with ergonomic body armor; 2.6mm exit pupil Measures 4.3 x 4 x 1.5 inches (W x H x D); Halo lifetime warranty