Construction: Binoculars Maximum magnification of the instrument: 3 times Weight: 47g Wearing conditions: 500 degrees or less myopia can be worn Material: PVC, with good elasticity, not easy to break and wear, durable, more aesthetic. Focus adjustment design: The mirror utilizes the working principle of remote telescope, the specially processed concave-convex spherical lenses and eyeglasses bracket constitute the optical focus system and are adjusted by the focus adjustment knobs on both sides of the frame. Equipped with white lenses and small teal-colored lenses, which can prevent the reflection of water surface from blinding. In bright light conditions, switch to the teal lens by pulling the lever on the panel to the left.