All Bresser Nautic models feature waterproof and robust rubber armor and nitrogen-filled optics. The multi-layered Bak-4 prism allows for a bright and sharp image, even in harsh weather conditions. Nautic 8x25 is a compact monocular binocular designed for water sports. Small and light enough to carry in a trouser pocket, it still provides 8x magnification, making it perfect for marine use. The wrist strap provides additional security during use. The dioptre adjustment can also be used for focusing. FEATURES: Multi-coated opticsWaterproof Dioptre adjustmentTwistUp eyecupsLE-eyepieceBak-4 glasses