| Model NO. | 4584/8X42 | 
| Function | Waterproof | 
| Usage | Bird Watching/Hunting, Travel | 
| Structure | Roof Prism | 
| Lens Type | Prime Lens | 
| Lens | Glass | 
| Objective Aperture | 30~50mm | 
| Focusing Type | Center Focusing | 
| Aperture | <50mm | 
| Objective Diameter | 42mm | 
| Field of View | 142m/1000m | 
| Exit Pupil Distance | 17.2mm | 
| Exit Pupil Diameter | 5.2mm | 
| Prisms Material | Bak4 | 
| Eyepiece System | Twist-up | 
| Lens Coating | Fully Multicoated | 
| Transport Package | Carton | 
| Specification | 8x42 | 
| Trademark | OEM/DONTOP | 
| Origin | China | 
| HS Code | 90051000 | 
| Production Capacity | 2000PCS /Week | 
 
                 
                     
                     
                    