The Oberwerk Sport HD and ED Series are hard to beat for portability and ruggedness. The Mariner Series are also popular for their excellent image quality, at the expense of increased size and weight. The Ultra Series offer the highest level of image quality as well as very rugged construction, yet is still hand-holdable. If portability is not a requirement, the extremely powerful 25/40x100mm Long-Range Observation “Classic” binocular is the ultimate instrument for terrestrial observation. The US Government has recently deployed hundreds of these to Middle Eastern war zones where they are protecting our troops and security forces.