2. Binoculars can be adjusted to easily match each user's eye di, which is very suitable for bird watching, hunting, hiking, 1. On a sunny Sunday, explore a new world with a backpack, look at nature with a telescope, track birds in the blue sky, 4. In addition, they are specially designed to withstand daily wear and tear, so your child can enjoy them for a long time, 3. Adopt all-optical glass lens, coated with multi-layer composite blue film, good light transmittance, no color difference, clear and sharp, Particularly suitable for outdoor activities such as mountaineering, hiking, driving, wildlife viewing and scenic appreciation.