| Magnification (x) |
20x (fixed) |
| Optical system |
Upright, unreversed image; eyepiece diopter adjustable for right eye; 56-to-72mm interpupillary distance adjustment |
| Field of vision (mm) |
11 (diameter) |
| Angle of view (º) |
12.6 |
| Vertical adjustment |
50mm from the base of stage |
| Eye relief (mm) |
11.1 |
| Plate |
Removal and reversible (top: flat; underside: built-in cup) |
| Light source |
2.5V-0.5A halogen lamp |
| Light settings |
On/off |
| Power source |
CR 123A lithium battery; approx. 1-hour battery life (at 20ºC) |
| Dimensions (mm) |
(In use) 184-238 (H)x94 (D)x100 (W) (Folded close) 144 (H) |
| Weight (g) |
Approx. 610 (without batteries) |
| Accessories |
Soft case; head unit cover; strap |
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