The monocular adopts high refractive index BAK4 prism and FMC lens coating, can effectively eliminate the internal light dispersion of the glass, reduce internal light loss, high transmittance, more transparent field of view. With 12mm eyepiece and 21mm large objective lens, can provide more realistic color, and clearer picture quality. And you can connect to the cellphone to take pictures and capture those memorable moments. Features: Portable pocket type monocular with stainless steel metal housing, with strong construction, and providing long durability. Adopts XP5 circle lens, wide angle design, with high reproduction, high transmittance, small chromatic aberration, clear and bright imaging, adapt to all-weather and harsh environment. 21mm objective lens, using high-end BAK4 prism. 12mm eyepiece with FMC broadband green film plating. The use of high refractive index BAK4 prism and FMC lens coating, can effectively eliminate the internal light dispersion of the glass, reduce internal light loss, high transmittance, more transparent field of view. One-handed design, light and compact, more portable, widely loved by the majority of observation enthusiasts. Labor-saving focal adjustment, pulley design for more precise adjustment. This monocular features an 8*20 zoom and shimmering night vision, clearer target. You can connect to the cellphone to take pictures and capture those memorable moments. This monocular has large field of view, which is perfect for sport events watching, travelling, bird watching, sightseeing and etc. Specifications: Name: Monocular Material: stainless steel Type: monocular, monocular + cellphone clip (optional) Package size: 130 * 80 * 90mm / 5.12 * 3.15 * 3.54in Package weight: Monocular: 100g / 3.53ounce Monocular + cellphone clip: 130g / 4.59ounce Packing List (monocular): 1 * Monocular OR Packing List (monocular+ cellphone clip): 1 * Monocular 1 * Cellphone Clip