C204 100x22x HD Roof Binoculars Waterproof Outdoor Mini Binoculars with Low Light Night Vision for Bird Watching Hunting Travel

The BAK4 has a high refractive index, which greatly reduces the light loss during the total reflection of the telescope image, and the image is clear, and the picture is bright and vivid.

BaK4 is a glass with a refractive index higher than BK7, which can effectively increase the transmittance, but the cost is relatively high, and it is mostly used for high-quality telescopes.

Exquisite choice, easy to use, suitable for traveling, watching concerts, outdoor climbing to see the scenery, easy going out is the most important thing, convenience is the last word.

The optical design of the eyepiece determines the exit pupil distance. It is recommended to choose an eyepiece with an exit pupil distance of at least 15mm, 22mm is better, in order to comfortably see the entire field of view.

As the basic component of a telescope, the objective lens is like the foundation of a building. Simply summarize, the larger the objective lens, the more stable and brighter the image quality.

Features:

• Name: Telescope
• Close focus distance: 5M
• Magnification: 10 times
• Shockproof: Yes
• Material: environmentally friendly rubber
• Waterproof type: life waterproof (does not support diving)
• Prism: BAK-4
• Objective lens diameter: 22mm
• Prism system: roof prism.
• Eyepiece diameter: 15mm
• Field of view angle: clear and wide angle.
• Coating type: Multi-layer broadband coating
• Product weight: 170g
• Product size: 90* 105*40mm
• Focusing method: central handwheel focusing + right eyepiece parallax adjustment