| Brand | Firefield | |
| Colour | black | |
| Country of origin | USA | |
| Warranty on materials and manufacturing defects | 10 year | |
| Series | Legend Ultra |
Features & functions
| Waterproof | yes | |
| Adjustable eye-cups | yes | |
| Type | monocular | |
| Accessories | case | |
| Material body | Rubber | |
| Carrying strap | no | |
| Filled with nitrogen | yes | |
| Prism system | Roof prism | |
| Tripod moutable | yes | |
| Close focus | 2 meter | |
| Front lens diameter | 42 mm |
Material
| Body material | Magnesium | |
| Carrying strap material | Neoprene |
Dimensions & weight
| Weight | 374 grams | |
| Length | 13.7 cm | |
| Height | 3.8 cm | |
| Width | 3.8 cm |
Performance
| Exit pupil diameter | 4.2 mm | |
| Eye relief | 15.2 mm | |
| Angle of view | 59 degrees | |
| Field of view at 1,000 metres | 113 meter | |
| Magnification | 10 | |
| Objective angle of view | 6.5 degrees | |
| Twilight factor | 20.5 |
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