TTDGYYXW HD Waterproof Telescope Outdoor Adult NightPortable Binocular High Power Lens Used for Bird Watching Concert

Details

• 5. Focus adjustment: the center rotates the focus wheel for precise adjustment, and the right eyepiece fine-tunes the parallax adjustment, which can be more accurately positioned during adjustment
• 2. Coating: Broadband coating, the average light transmittance exceeds 99.5% in the 400 nm-600 nm spectral range
• 3. Prism: BAK4 prism with high refractive index plays a very important role in the optical structure, the image is clear and bright
• 4. Mirror body: All-metal mirror body, , high-strength body , compared with plastic mirror body, metal mirror body has a non-deformable and comfortable feel
• 1. Objective lens: 50mm large objective lens, usually the larger the aperture, the better, especially in the case of strong contrast between light and dark, the larger the aperture, the more light, the brighter the image