| Model NO. | SFA4/15-45X50 | 
| Magnification | 15-45X | 
| Usage | Bird Watching/Hunting, Travel | 
| Lens Type | Prime Lens | 
| Objective Aperture | 30~50mm | 
| Focusing Type | Center Focusing | 
| Aperture | 50-100mm | 
| Objective Diameter | 52mm | 
| Front Lens Diameter | 73mm | 
| Eyepiece Diameter(mm) | 16mm | 
| Transport Package | Carton | 
| Specification | Aluminum Alloy, Optical Glass | 
| Trademark | Dontop/OEM | 
| Origin | China (Mainland) | 
| HS Code | 90058090 | 
| Production Capacity | 5000PCS/Week | 
 
                 
                     
                     
                    