Hi, because it features a 5MP built-in camera, and the camera captures the image directly from the objective lenses, bypassing the eyepieces when you’re using the screen. 

The telescope's objective and eyepiece lenses feature BAK4 prisms and multi-layer coatings for a great viewing experience. 

The binocular shell is made of environmentally friendly, odorless rubber material. The surface of the binoculars is nicely matted and effectively prevents slipping. 

(1)Please check to make sure you have installed 1.5V 6*AA battery. Do not use inferior batteries as their voltage is lower than 1.5V. (We recommend brands like Energizer, Duracell, AmazonBasics, etc.). (2)Make sure the polarity is correct and the contact with the spring is normal. (3)Press and hold the power button for at least 3 seconds to power on. (4)If it still cannot be turned on after 1-3 steps, please try to use a power bank. 

Step 1: Being careful not to touch the lens, cover the right objective lens (or close your right eye) and turn the central focusing dial until the image seen by the left eye is clear. Step 2: Cover the left lens (or close the left eye) and this time instead of turning the central focusing wheel, turn the diopter adjustment ring (located near the right eyepiece and displayed on the small image in the upper right) until the image is clear. Step 3: Finally look through the binoculars with both eyes until the image is clear and sharp.