SA401 APO 25-75X100 Double ED Spotting Scope Variation:SA401 Scope Reliable and Secure Connection: The

Reliable and Secure Connection: The cable provides a firm and stable connection

Two elements out of the 6 optical elements are made of ED (Extra-low Dispersion) glass to provide excellent sharpness edge-to-edge

These versatile rings are compatible not only with PrimaLuceLab AIRY ED72 optical tubes but also with other telescopes sporting an 87mm diameter optical tube

it takes about 3-4 hours for charging and then able to be continually working last 6-8 hours

dynamic focus control when connected to your camera

SA401 APO 25-75X100 Double ED Spotting Scope Variation:SA401 Scope Reliable and Secure Connection: TheThis SA401 spotting scope is with a range of magnifications from 25X to 75X, meeting your different needs. The spotting scopes for bird watching is designed to provide you with great performance under a wide range of viewing situations. SA401 APO Apochromatic 25 75X100 Double ED Glasses Spotting Scope Dual ED Objective Lens Dual ED objective lens (4 pieces 4 group) ultra low dispersion optical glass that significantly reduces chromatic aberration,