1.The 10-30x42 ZOOM telescope features advanced full multilayer coating technology and a large BAK4 prism lens that increases light transmission and reduces unwanted light reflections while providing clear, Good-contrast, color-accurate images. 2.Our ZOOM telescope features a Good-quality smartphone stand and a sturdy tripod that can be adjusted to two different angles and 3 lengths as needed. 3.You can adjust the blindfold and focus wheel with one hand with a 10-30x42 ZOOM telescope until you see a clear and bright image, and the smartphone stand and expandable stable tripod will help you easily get HD images or videos. 4.16mm large eyepiece &42mm large objective lens The 10-30x42 ZOOM telescope is equipped with a larger eyepiece and objective lens than a normal ZOOM telescope, guaranteeing more light transmittance and a brighter and larger field of view