Product Features: 1. 20x20mm larger objective for brighter images; 2. Telescopic and adjustable lens; 3. Metal body for ; 4. 5X magnification for better visual feelings; 5. 43-70cm adjustable length, easy to carry and use. Product Details: Item: 5x20 Periscope Monocular Magnification: 5X Objective Diameter: 20x20mm FOV: 8.5 Degree Diopter Adjustment: +/- 5 Lens Material: Full optical glass Eye Cup: Fold-down Rubber Eye Cover Material: plastic colour: black Package Contents: 1 x periscope monocular 1 x storage bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.