Optics System Outer Diameter of Tip:5mm-8mm Outer Diameter of tube:5mm-8mm Working Length:500mm-2000mm Total Length:634mm-2034mm Weight:370g-500g Packing:326mm¡Á237mm¡Á70mm Side View Tip:6mm(Optional) Battery:3aaa Side View Details Field Of View:90, Direction Of View:30,/45,/60, Focal Range:30mm-150mm.