[10-30 x 40 high brightness zoom] Upgrade the magnification from 10 times to 30 times to provide wider, clearer and brighter vision. Adjust the magnification of this zoom monocular telescope according to your needs, it will provide you with visual fidelityand let you see the wonderful world. [Upgrade large comfortable target lens and eye cup] Monocular telescope uses BAK4 prism, FMC green film and high-definition blue film, upgraded version of 20 mm eyepiece and 40 mm objective lens, which greatly expands your field of view without restrictions. [Waterproof and anti-fog design] It is made of aluminum alloy and rubber materials, and high-purity nitrogen is filled with compact monocular optical equipment to prevent dust from entering the monocular. Therefore, the high-density telescope has a waterproofand anti-fog function, which is suitable for any weather and environment. [Amazing crystal clear view] For dual focus design, high light transmittance, focusing scope can provide you with brighter, higher contrast images. The eye cup can be rotated to the deep focus view, and then adjust the focus adjustment and zoom adjustmentuntil the view becomes clear. [Small size and wide field of view] The high-power monocular telescope is only 153mm high and super compact enough to fit in a pocket for easy carrying. The wide field of view is 300 feet/1000 yards (128 meters/1000 meters), giving you a clearer and farthervision, suitable for bird watching, hunting, hiking or sightseeing, etc.