Bresser Astro 20x80 Binoculars: These high-brightness binoculars with fully multi-coated Bak4 optics and an extra-large lens diameter deliver sharp and brilliant images. With 20x magnification, these binoculars are ideal for astronomy. The optical design ensures the best possible image and perfect visibility, while the diopter correction and foldable rubber eyecups are also suitable for glasses wearers. The binoculars can be mounted directly on a tripod thanks to the tripod socket. Specifications: - Colour: black - Gender: unisex - Material: aluminium, rubber - Dimensions: 33 x 23.5 x 10.8 cm - Weight: 2100 grams Optical specifications: - Magnification: 20x - Lens diameter: 80 mm - Field of view: 56 m - Light intensity: 16 - Twilight factor: 40 - Optical design: Porro - Prisms: BaK-4 Technical specifications: - Eye relief min: 57 mm - Eye relief max: 72 mm Contents: - 1 Binoculars - 1 Shoulder bag - 1 Cleaning cloth - 1 Protective caps - 1 Manual