Mini binoculares de película verde pequeña, 8x21x, prisma óptico de alta definición con bolsa de tela portátil, telescopio para exteriores.

Telescope Single and Double Tube: Double Tube Usage: Handheld Basic Parameters Model 8x21 Magnification: 8x Weight: Approximately 210g Accessories: Desiccant, Shoulder Strap, Nylon Waist Bag, User Manual, Lens Cleaning Cloth, Packaging Box Technical Specifications Objective lens diameter 21mm The magnification of an 8x telescope is not determined by the magnification number; higher magnification isn't always better. The magnification should be moderate. Generally, a moderate magnification is around 8x-10x. The higher the magnification, the larger the objective lens diameter required to ensure clarity; otherwise, high magnification only brings reduced clarity and loses its significance. Many telescopes have exaggerated magnification numbers; actual parameters are the most effective comparison Aperture 21mm Field of view 7° Prism Category BaK4 Coating Anti-reflective Green Coating Exit Pupil Diameter 3mm Exit Pupil Distance 10mm Dimensions: Length 90cm x Width 100cm when unfolded, 60cm when folded, Thickness 35mm Field of view 131m/1000m Focusing method: Center handwheel focusing, right eyepiece fine adjustment. Features Compact and lightweight, although small, it has a quality feel. Its substantial size combined with its clear effect makes it a great choice for travel, watching shows, etc Purpose Travel, Outdoor Sports, Watching Sports Games, Performances, Bird Watching, Wildlife Observation, Camping, Hiking, Adventure, Shooting, Archery, Fishing, Terrain Observation, Scenery Appreciation, etc Functional Parameters Anti-slip Technology Waterproof Technology No Folding Technology Tripod Interface No Material: Prism 100% optical glass, Color: Black as shown in the picture Telescope Knowledge Popularization: How to use binoculars? 1. When using the telescope, first adjust the distance between the two telescope tubes until the images seen by both eyes form a circle. 2. Then slowly turn the focus wheel until the left eye is clear 3. Slowly rotate the right eyepiece until the right eye can see clearly The purpose of this action is to adapt the telescope for binocular vision differences.Remember the position of the right eyepiece and keep it unchanged.When observing targets at different distances, simply turn the focus wheel directly Maintenance A. When wiping the lens, use the lens cloth that comes with the telescope or other soft, clean cloth. B. When removing remaining stains, apply 1-2 drops of alcohol on a lint cloth. C. The telescope should be stored in a ventilated and dry environment. The correct way to use the telescope: 1.Adjust the interpupillary distance: Adjust the distance between the two telescope tubes until the left and right views form a circular field of view. At this point, the interpupillary distance of the two tubes will be consistent with the interpupillary distance of the human eye. 2.Focusing: First close your right eye and look out with your left eye. Turn the telescope's central adjustment mechanism handwheel or pressure plate until it's clear; then close your left eye and look out with your right eye. Adjust the right eye eyepiece by slowly rotating until it's clear. 3.Observation: Aim the telescope at the target, slowly rotate the centering mechanism, and you will quickly see the target clearly with both eyes.For targets at different distances, simply adjust the mid-tone mechanism to see the target clearly. 4.How to use the zoom telescope: First, adjust the zoom lever to a small magnification and use the above method to make adjustments.Until the target is clear, pull the zoom lever Choose the appropriate magnification you need. Maintenance methods for telescopes: 1During the use of the telescope after purchase, you should note that when not in use, it must be stored in a dry place. The telescope lens can easily peel off its coating and become foggy and moldy if exposed to moisture for a long time. 2.During use, if you notice dust or marks on the lenses, do not scrub them with water. The solution is to gently wipe them with a cotton swab dipped in some alcohol or gasoline that you often use at home.Generally, do not use a lens cleaning cloth to dry; it can easily scratch the lens surface. How far can a telescope see? Friends who are new to telescopes always like to ask this question. The answer is very far away.The effective distance of standard binoculars is above 60-600 meters. 1.The distance of the telescope is related to human vision: for example, when the letter 'E' on the vision chart is tested at 5m yuan distance, people with good vision can see the lower row, while those with nearsightedness may only see the large 'E' in the upper rows.If you place the eye chart at 50m feet away and observe it with a 10x telescope, it is equivalent to zooming in 10x, which is the same as observing at 5m feet away.People with good vision can still see the lines below, but those with nearsightedness can only see the large 'E' in the upper lines clearly; the lower lines are still unclear.People with nearsightedness might say that this telescope cannot see 50m clearly, even the letters below are unclear. However, those with good vision might say that this telescope is very good and can even see the letters below the 50m on the vision chart. Can you say that this telescope can only see 50m??? 2.The distance seen through a telescope depends on the size of the object: For example, if there is an ant outside at 1000m meters, using a 10x telescope is equivalent to bringing the ant closer to 100m meters, but you still won't be able to see it. Can you say that this telescope cannot see 1000m meters? If there is a person outside at 100m meters, using a 10x telescope is equivalent to bringing them closer to 100m meters, then you can definitely see them clearly.When the letter 'E' on the eye chart is placed at a distance of 5m for testing, people with good vision can clearly see the following lines, while those with nearsightedness may only be able to see the large 'E' in the upper lines.Why? It's because the letters 'E' in the following lines are too small. You can see the moon's craters at 380,000 kilometers away with a telescope, but you can't see Earth satellites that are very close to us because they are too small. That's the reason. 3.The distance of the telescope is related to air quality: for example, using the same telescope to observe a target 1000m meters away, you can clearly see the target on a sunny day but may not be able to see clearly after rain or on cloudy days without sunlight, when there is car exhaust and dust in the air.To take it one step further, if there is fog and suspended particles in the air that reduce visibility, you might not even be able to see 50m meters. This is why highways are closed during heavy fog. The total price of the goods is greater than 200 yuan or the total number of goods is greater than 50 pieces Our store's products are all mixed batch, and the mixed batch amount only needs to be over 200 yuan. Mixed batch means adding multiple products to the purchase order and placing an order for at least 20 pieces of each product for shipping. Single product means buying one item at a time. Dear customer, welcome to our store. Please read the ordering instructions before placing an order. If you have any objections, just take a look and then place the order, which will be deemed as agreeing to the following terms. Please know that when you choose a seller, we are also choosing customers. We hope to work with honest people, and we welcome sincere business dealings from all parties. Shipping: Our default shipping method is that we may switch to Aneng, Debon, Jiaji, etc. for delivery to places we cannot reach. Please consult customer service for specific shipping costs as they may vary.For requests or services like EMS that have higher costs, additional fees will be required.Important: Upon arrival, please inspect the goods in front of the staff and sign for them only if everything is correct. If there are any abnormalities, you can refuse to sign, and the goods will be returned without causing any loss to you.To avoid unnecessary disputes, please ensure that the receiving personnel must check the goods on the spot; according to Alibaba's rules, once signed for, it is considered that the product has arrived intact at the customer's end, and the seller and company are not responsible. Thank you for your understanding Shipping: The cost is default to be paid upon arrival. If you need to prepay for shipping, please contact customer service first to calculate the cost and help you adjust the actual shipping fee.After arrival, you need to pick it up at the freight market yourself. If you need delivery to your door, you can negotiate with the freight company yourself, so don't refuse the delivery because it's far from you and directly apply for a refund. In this case, we won't do anything, and all losses will be borne by the buyer. If you want to send it back, I suggest you check first whether the freight market is far from your home. I hope for your understanding The goods are transported by a third-party shipping company, and we cannot guarantee the arrival time. However, we can provide tracking numbers and assist with inquiries Return and Exchange Service: Since this is a marketplace, the price is not fixed and depends on the actual situation. If there are no valid reasons or no reason for return or exchange, the buyer is responsible for all return shipping costs.If you go shopping at the supermarket, whether you walk or take a taxi, the store will not reimburse you for the travel expenses; if you are not satisfied with the clothes or shoes you bought and want to return or exchange them, whether you walk, take a taxi, or drive, the store still won't reimburse you for the travel expenses... This is the basic principle of transportation.You agree to place an order.If you don't agree, there's no need to force it; just take a look and you can choose to turn away freely. For product quality issues, returns and exchanges are not accepted except for non-returnable items and products under 2 yuan. Once sold, no returns will be accepted for any reason to avoid some customers who like to pick faults and cause trouble.Return and exchange shipping costs due to subjective reasons by the buyer are to be borne by the buyer themselves Returned goods must ensure that they do not affect secondary sales; products must be undamaged, packaging intact, and products free from stains. Tags must be complete. If returned goods do not match those sent out, this refund will be submitted to Alibaba's rights protection department for verification. Responsibility lies with the buyer Additional Terms: Remember to check the completeness of the goods upon arrival before signing for them. The goods are entirely transported by a third-party shipping company. Any damage to items during transportation is the responsibility of the buyer. We can assist customers in filing claims with the company; do not give negative reviews based on shipping speed or damaged items. Otherwise, we will escalate the complaint to the end. Thank you 1. Returns and exchanges are accepted under the following circumstances 1. If the product is damaged, the wrong color or style was sent, missing items, large stains, or severely damaged making it unsellable, you can apply for a return or exchange. When applying for a return or exchange, please make sure to take photos first and then contact our customer service staff for negotiation If it is determined by our company that there is indeed a quality issue, the shipping costs incurred will be covered by us.Our company has refused to receive the payment. Please help us advance the shipping fee first. We will directly transfer the incurred cost to your designated Alipay account via Alipay.Note: If you return the product directly without contacting us, we will not accept it 2. Returns and exchanges are not accepted under the following circumstances 1.Occasionally, there may be small bubbles, scratches, or minor flaws in the product that do not affect sales and are not considered quality issues. Such problems are inevitable, and there are no 100% perfect products 3. Man-made defects, product color difference, slow delivery, and poor customer service attitude from the company. 4. Issues based on subjective judgment by buyers such as: not liking it, different from what I imagined, different from others, materials not meeting expectations, poor texture, looks unclassy, etc 5.The colors shipped before and after may vary due to different batches each time, making it difficult to ensure that the product color matches the previous batch exactly. 6. I don't want to sell anymore; I can't ship the goods.Customs intercepted it, can't sell, can't move, can't ship, platform penalized it, got deleted, got taken off the shelves.Can't sell anymore, waiting. Precautions: All after-sales issues must be addressed within three days of receiving the goods based on the signing time. Please contact our customer service staff promptly and provide your purchase number when applying for after-sales service. Each product can only be processed once. After receiving the goods, please carefully check the quantity, style, color, specifications, and quality. We will not deal with customers who leave negative reviews again. Thank you. Our company has always adhered to the principle of "integrity management" as the fundamental basis for development. It is our responsibility and we will not shirk any of it However, this does not fall under our responsibility, and we will not compromise for any reason. Without rules, there is no order; each store has its own unique regulations Just like everyone has different shopping needs.We develop as a company Continuously learning and refining relative processes and systems is also aimed at better serving everyone What we seek is mutual benefit.Nowadays, we prioritize courtesy over aggression and do not force sales If you like us, please follow us closely so we can grow together. If you feel that we are bothering you, then just close your eyes and rest; we certainly won't disturb you. Finally, I wish all business partners prosperity and abundant wealth Hardware products may have some minor flaws, but as long as they do not affect use, we kindly ask for your understanding.For those who pursue perfection, please take the elegant detour. Thank you. Perfectionist buyers, please be cautious when purchasing. According to our investigation, those giving negative reviews are mostly buyers with less than three stars. We have many things to do and cannot afford your hassles.We have excellent after-sales service. Please consult with us for any issues, and we will do our best to provide you with a satisfactory solution. Warm reminder: First of all, thank you very much for choosing our store's products. We aim to achieve sustainable development by offering cost-effective goods that work together with customers to achieve mutual success. At the same time, since most of the products sold in our store are hardware tools, they are not high-precision products. They are simply tools with a certain range of use and tolerance. Of course, they may not be perfect, so please consider carefully before purchasing