Model: CS1027 - Zoom Lens for smartphones Use - Magnification: 8X - Angle of View: 9° - Objective Lens Diameter: Φ18mm - Exit Pupil: Φ3.3mm - Eye Relief: 8.0 to 13mm - Product Dimention: Φ30 x 73mm - Product Weight: around 45g - Minimum Focal Distance: 3 meters - Maximum Focal Distance: 1km - 2km - ISD: 0.11mm - Manual Focusing