HIGH QUALITY & PORTABLEThe shell is made of a titanium alloy with a higher specific strength and weighs only 1.1 pounds. After retracted, the length is only 7.87 inches, and you can easily put it in a backpack or pocket when , traveling, or camping.4k 10-300x40mm super telephoto zoom monocular telescope portableHIGH CONTRAST AND RESOLUTION IMAGESThe Monocular telescope equipped with the B A K 4 prism and fully muti-coated lens, The larger the objective lens, the more light that enters to the monocular, and the brighter the image. Clear image without black bars,it makes Super Clear and Sharp Images.WATERPROOF & FOG PROOFCompact and sturdy body make it withstand the heavy weather, the mirror is full of the high-purity nitrogen, waterproof and antifogging. You can use it in raining day and humid environment, and no need to worry about this item. HD MAGNIFICATION 10-300x magnification, provides a clear, bright image and different fields of view, perfect for hiking, , climbing, bird watching, ball games, concerts, travel, viewing landscapes .super telephoto zoom monoculars - 4kIDEAL FOR OUTDOOR ENTHUSIASTS AND WILDERNESS EXPLORERS A handheld and must-have for bird watching, wildlife, , hiking, mountaineering, camping, surveillance and traveling.