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Bird Watching Binoculars
| Item No. | ATU003A | ATU003B |
| Model | 8X21 | 10X21 |
| Magnification | 8X | 10X |
| Object Lens Diameter | 21mm | 21mm |
| Field of View | 122m/1000m | 114m/1000m |
| Eye Relief | 10mm | 10mm |
| Exit Pupil Diameter | 2.6mm | 2.1mm |
| Pism System | porro | porro |
| Net Weight | 158g | |
| Dimensions | 102x85x40mm | |