The sight provides direct fire targeting when shooting from the tank anti-aircraft mount. It is an optical monocular periscope sight with rotating prism, electrically heated windows, and illuminated sight grid.
- Field of view: 50 degrees
- Exit pupil diameter: 5 mm
- Distance of the exit pupil from the outside of the last ocular lens: 23 mm
- Threshold of resolution in the central third of the optical system's field of view: not more than 60″
- Transmittance factor: not less than 0.2
- Periscope line-of-sight height: 220 mm
- Ocular diopter setting: from -4 diopter to +4 diopter
- Sighting in the range of: from -10 degrees to +85 degrees
- Horizontal internal zeroing from the zero point: ±(00 – 25) mils
- Guaranteed service life: not less than 500 hours
