Feature:1. Horn eye mask, prevent oppression of the eyeball, the full line of sight light film clear no halo.2. Enhance concentration, watch the insects, see the distant view, correct understanding of the world, help children grow.3. Can share with friends, guide children to learn to share with others, form a good habit. Learn how to communicate with others while playing.4. Increase knowledge, explore the principles of optics and cultivate children's scientific potential.5. Wonderful gift for your kids.Spec:Item type: Children Binocular Telescope Material: rubber + metalOptional colors: orange, yellow, green Product model: 8X21Magnification: 8 timesObjective lens diameter: Approx. 21mmEyepiece diameter: Approx. 12mmField of view: about 122m-1000mPrism: BAK4Coating: FMCFocusing mode: middle + right eye Size(length x height): Approx. 108x96mm/4.3x3.8inPackage List:1 x Children Binocular Telescope 1 x Wiping cloth1 x Storage bag1 x Hanging rope1 x Instruction