2. Binoculars can be adjusted to easily match the eye di of each child, which is very suitable for bird watching, hunting, hiking, 1. Product size: (mm): 120.5X162X55, exit pupil di: 15.4 (mm), exit pupil diameter: 4.3 (mm), eyepiece diameter (mm): 24, objective lens diameter (mm): 32, 4. The frosted design allows the child to grasp the binoculars more stably, just turn the center dial to focus easily, 3. It is specially designed to protect children's eyes and face, even after hours of bird watching or wildlife discovery, it can provide comfort, This binocular also can be used for watching large stage play, vocal concert, a football game, etc.