10 times: 3.5~30 times: 2.0. 10x 100m/1000m; 30 x: 30m/1000m It can works in low light, but you won't see anything in total darkness.Ordinary telescope zoom focus, is generally rotated or extended, has two types of focus, mode more widely usingEasy to adjust the new large Accent wheel with just one hand to make it the natural monocular for you.With multi-coated optics fmc wide band green film with a rubber coating. High light transmittance reaches up to 99.5%, providing you with wide and stable viewing with the image.In compact zoom capability is relatively good, especially in the last order focal length can reach 0.5m, living in the forefront of indoor like product. If you can not adjust the clear image, you can the adjust several times The 10-30x25 monocular lets the world be in front of you Why choose our monocular? The monocular features 10X-30X magnification ensuring the best view in a field of 1000 meters. The 25mm FMC green film lens achieves better light transmission and higher brightness.The BAK-4 prism on top provides up to 99% light transmission. High quality fully coated lenses with good vision and clear image.Ultra-compact and lightweight design, easy to use with one hand, comfortable handheld telescope, easy to store in your pocket and take anywhere.Waterproof, fogproof, dustproof. suitable for most weather conditions and environment.It is not only a telescope for adults, but also for children. With a foldable eye mask, you can use the monocular with or without glasses.Perfect for bird watching, hunting, hiking, camping, sightseeing, etc. Q1How to observe distant landscapes? 1. Please keep all barrels of the telescope in contracted condition; 2. It is recommended to try 10X for the first use. The rubber wheel of the rotating eyepiece can be zoomed between 10x and 21x. NOTE: As magnification increases, imaging will worsen and jitter will become increasingly severe. 3. It has two focusing methods: Method 1. Rotate the middle rubber focus wheel until the image is in focus. Method 2. Fully shrink the middle rubber focus wheel, then rotate the metal lens focus wheel until the image is sharp. 4. Observing scenes at different distances requires readjustment of the telescope. (Warm reminder: If you have problems with your eyesight, please check whether the middle rubber focus wheel and the metal lens focus wheel are used at the same time. When using either focusing methods, please fully reduce the other focus wheel) Q2How to observe 0.5 meter Colse-up scenery? Technological revolution The minimum distance this 10-30x25 zoom telescope can observe is 0.5 meters. A conventional telescope measures 3 meters. It is convenient for you to experience the beauty and fun of microscopic scenery, such as the shining petals of small flowers, the beautiful wings of small insects, the wonderful reflection of dew drops, etc. Easy to use: aim the lens at the observation object, then rotate the middle rubber focus ring until the image is clear. (Warm reminder: If it is not clear, please check whether the lens metal focusing knob is fully retracted) How far can this 10-30x25 telescope look? A1: The farthest distance this telescope can see is affected by factors such as personal vision, hand stability, project size, air quality and other factors. For example, if you zoom in 10X and observe a car 500 meters away, the telescope will bring the car 50 meters closer. Standing at the same distance, people with good vision can clearly see the license plate number, while short-sighted people can see the vague license plate number.The field of vision is also affected by air quality. On a sunny day you can see more clearly, but you may not see clearly on a cloudy or rainy day. At the same time, the lens, prism, coating and structural parts of the telescope determine the quality of the telescope. Clear vision in low lightIt has low light night vision, it could help you see things in low light conditions (NOTE: nothing can see in total darkness), give you amazing viewing experience. stability whether you're running or dancing to your favorite tunes. FMC Superior BAK-4 Green Film PrismIt is equipped with BAK-4 prism and fully multi-coated (FMC) lens, ensures superior light transmittance and brightness and the light transmittance reaches up to 99%. waterproofThis HD waterproof, fogproof, dustproof, shockproof monocular, built-in O-ring sealed optics could prevent the lens from dust/moisture/debris, ensure the vivid waterproof function, suitable for most weather conditions and the environment (Note: it may not be used in heavy rain for a long time or soaked in water). Characteristics:Model: Telescope 10-30x25 Magnification: 10 times ~ 30 times (best option 10X ) Lens diameter: 13mm Objective dia