The 10-300x40mm Ultra Long Zoom HD BAK4 All-Optic Monocular is a precision device designed to provide unparalleled visual clarity and precision. It is equipped with a high-quality BAK4 prism system that ensures crisp, bright, crystal-clear images with minimal distortion even at high magnifications. This spotting scope boasts an impressive 10-300x zoom range, making it a versatile tool for a variety of applications, including wildlife viewing, bird watching, hunting, hiking, and surveillance. With its ultra-long zoom capability, you can quickly and easily observe distant objects with outstanding detail and accuracy. The 40mm objective lens is coated with an advanced anti-reflection coating for high light transmission, making it easy to observe objects even in low-light conditions. Constructed from durable, high-quality materials, this telescope is resistant to wear and tear, ensuring long-lasting use, even in challenging outdoor environments.