Carson Optical TM-821 8 x 21mm. Compact BinocularsThe Carson TrailMaxx 8x21mm binocular is extremely durable, compact and lightweight. Weighing only 0.54 pounds, it is the perfect binocular to take with you to concerts, sporting events, camping, hiking, traveling and so much more! The TrailMaxx 8x21mm binoculars has a center focusing knob with barr..