Monocular night vision generation 2+/3 Gals M21
| Technical characteristics Gals M21: | |||
| Magnification. Х | 5,5 | 3 | 5,5 |
| Angle of vision, degr. | 40 | 14 | 8 |
| Lenses, focal length, mm: | F26 | F80 | F140 |
| Focus limit, m | 0,25 ... ∞ | 7 ... ∞ | 15 ... ∞ |
| Diopter range, dptr. | ±4 | ±4 | ±4 |
| Detection range, m | 500-700 | 400-500 | 500-700 |
| Operating temperature | -40С...+50С | -40С...+50С | -40С...+50С |
| Type of batteries | CR123A | CR123A | CR123A |
| Operating time, hour | 60 | 60,35 | 60 |
| Dimensions. mm | 145x54x65 | 209x58x79 | 270x82x92 |
| Weight, kg | 0,45 | 0,64 | 1,1 |
| Degree of protection by IEC 60529 | IPx4 | IPx4 | IPx4 |