HD BINOCULAR LENS: Adopts BAK4 Paul prisms to eliminate stray light and improve color reproduction. Reduces reflected light in the objective lens to improve light transmission, image brightness and image clarity. Adjust the telescope to the correct position according to your eyes and then center focus without ghosting.LARGE FIELD OF VIEW: Large eyepieces coated with transmittance-enhancing blue film for a large field of view and comfortable viewing. The superb light transmission and light gathering function of the lenses make them visible in low light. You can see objects clearly even in low light conditions, providing you with high quality images.DURABLE: Our goal is to provide you with long-lasting gadgets made from high-quality materials and skillful craftsmanship. Designed for outdoor activities such as mountain climbing, hiking, driving, wildlife watching, etc., it can help adults and children to broaden their vision and durable.PERFECT GIFT: Perfect gift for Father's Day, Children's Day, Christmas, Birthday and other festivals, if you have any questions about the product, please feel free to contact us.