Binocular adjustment, free adjustment for looking far and near; 2. The large eyepiece is coated with an anti-reflection blue film, which has a large field of view and is comfortable to watch; 3. The large objective lens increases the amount of light input, and the image is clearer and brighter; 4. All-optical glass lens, full Multi-layer broadband coating on the surface, the image is not color cast or distorted, and the viewing is pleasing to the eye. The super light transmittance and condensing function of the lens make it visible in low light.