Delta Optical Extreme 15x70 binocular is one of the biggest on the market. 15x magnification is perfect for long-distance observations and 70 mm lenses draws in plenty of light even during nighttime. This model is thus suitable for hunting, military, law enforcement personnel and also for astronomy observations of not only stars and planets but other celestial phenomenon such as comets and clusters. These binoculars are built with extremely durable materials and modern optical innovations such as FMC anti-reflective coatings that eliminates major distortions and together with incredible brightness and colors, gives you great resolution. With this model, your eyes are open to an amazing scenery with incredible details. They have individual focusing mechanism, not only to make them more impervious, but also because you can only make proper adjustments once and afterwards the binoculars focus for themselves. Eyecups have one position but large exit pupil distance and soft tethered rubber helps to make a proper eye-relief even for eye glass wearers and helps you to cut the light coming from the sides. Due to its heavy construction and power you can mount them to a tripod adaptable screw.