Konusvue binoculars have a good optical quality, a strong full-metal construction and a sturdy rubber armouring for superior gripping capability even while wearing gloves. COATED OPTICS WIDE ANGLE (except 7x50) RUBBER COVERED CENTRAL FOCUS INSTRUCTIONS IN 8 LANGUAGES SUPPLIED WITH CASE COMPETITIVELY PRICED LIGHTWEIGHT BODY Type: classic, wide angle Magnification/diameter: 8x40 W.A. Focusing: central Field of view at 1000 m (1000 yd.):143 m (476 ft.) Exit pupil: 5 mm Weight: 530 g (18.7 oz.) Tripod adaptability: yes