Feature: 1. Waterproof, can better prolong the service life of the telescope. Easy to operate in any harsh environment. 2. BAK4 prism and multi-coated lens to improve light transmittance and image clarity. 3. Central focus knob, smooth operation. 4. Broadband green film coating increases light transmittance and makes the image color more complete. 5. Lightweight and compact, ideal for camping, hiking, concerts, bird watching, hunting, travel, golf, sporting events and other outdoor activities. 6. Metal tray, better quality, better anti-drop performance, effectively extend the service life of the telescope, which is unmatched by other plastic trays! Specification: Name: Binoculars Net weight: about 180g Material: Rubber and Metal Prism material: BAK4 Lens coating: blue-coated eyepiece, green-coated objective Field of view: 500M/50000M Size: about 9x10.5x4cm/3.54x4.13x1.57 inch Colour: Black Note: 1. Keep an appropriate distance from the eyepiece. If the stickers are too close or too far away, you will feel shadows in your field of vision when you observe, and you will not be able to get a full field of view. 2. Adjust the interpupillary distance. Adjust the distance between the two lens barrels to match the pupillary distance of your eyes so that overlapping images can be seen. 3. Focus. Slowly turn the focus wheel to focus and adjust sharpness. 4. Do not look directly at the sun with binoculars, this can cause serious eye damage or even blindness. 5. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 6. Please allow 1-2cm measuring deviation due to manual measurement. Package: 1*Binoculars 1*Mobile Phone Clip 1*Storage Bag 1*Mirror Cloth 1*Instruction