TKN-3VM combined sight device is a combined electronic and optical night vision device, operating in passive and active modes. It allows a vehicle commander to observe the road, terrain and other vehicles of its unit in daytime and night conditions.

This device is a tank and armored personnel carriers configuration.

• Observation distance of the surveillance object of the tank type in passive mode with contrast of the surveillance object against the background not less than 0.4, transparency of the air not less than 0.7, natural night lighting from 5×10‑3 to 5 lux: not less than 1200 m

• Observation distance of the surveillance object of the tank type in active mode when target is illuminated by OU-ZK lamp with infrared filter, with contrast of the surveillance objet against the background not less than 0.4, transparency of the air not less than 0.7: not less than 1000 m

• Zoom: x3.3±0.3

• Field of view: not less than 10 degrees

• Resolution limit in the center of the field of view: not less than 45 lines/mm

• Power consumption: not more than 5 W

• Observation distance of the surveillance object of the tank type with contrast of the surveillance object against the background not less than 0.4, transparency of the air not less than 0.7: not limited

• Zoom: x5±0.5

• Field of view: not less than 10 degrees

• Resolution limit in the center of the field of view: not more than 12 ″

• Diameter of the exit pupil: not less than 5 mm

• Distance of the exit pupil: 22±2 mm

• Ocular diopter setting: not less than ±4 diopter

• Limits of ocular setting by the interpupillary distance: from 54 to 74 mm

• Periscope line-of-sight height: 200±11 mm

• DC power supply voltage: 27 V

• Ocular heater power consumption: not more than 13 W

• Overall dimensions: not more than 217×195×460 mm

• Weight: not more than 12.5 kg