The BRESSER ASTRO & MARINE SF 7x50 WP telescope is ideal for astronomical and marine use, e.g. for lovers of sailing and water sports. Rugged and IPX6 Weatherproof Thanks to its ergonomic construction and rubber armor, these binoculars fit securely in the hand and are shock-resistant. The binoculars are waterproof and filled with nitrogen, which effectively prevents fogging of the lenses even in adverse weather conditions. With tripod connection The robust, yet very light construction is made possible by the state-of-the-art magnesium housing, as magnesium is approximately 35% lighter, while being stronger than aluminum. Due to the moderate 7x magnification and light weight, these 7x50 binoculars are also excellent for use on tripods thanks to the connecting thread on the central axis. Although this is not absolutely necessary at 7x magnification, it is highly recommended, especially for long-term astronomical observations, in order to obtain an absolutely uniform image. Eyepieces for convenient use Central focusing allows you to focus the binoculars once and then observe objects in the night sky or on the horizon more clearly. In addition, this design prevents accidental changes of focus. Rubber eyecups and binoculars with a comfortable viewing distance of 20 mm allow even those wearing glasses to use the entire field of vision. High-quality optics Thanks to the multi-coated Bak4 lens, the large diameter of 50 mm and the high-quality eyepieces (5 lenses in 3 groups), this excellent binocular produces sharp and brilliant images. The maximum reduction of stray light achieved by internal deflectors and housing/edge blacking results in the best possible optical image and perfect contrast even in poor lighting conditions, especially under the night sky.