Electrooptic Legat 355 product image

Electrooptic Legat 355

The LEGAT 355 is a thermal scope made by Electrooptic and is part of the Legat 3 series.


The Legat 355 features a crisp 55mm f/1 objective lens focusing the available thermal radiation. The field of view on this thermal scope is 7.6 by 5 degrees. It features a 4 times digital zoom to enlarge your subject. The eye relief distance is measured at 52mm.

Behind the lens of the Legat 355 you can find the (uncooled, 12 micrometer) 384 x 288 pixels thermal core refreshing the image at 50Hz. The thermal contrast (NETD) of this thermal scope is <45mK and it's operating within the 7µm to 14µm infrared spectrum.

The physical dimensions of this thermal scope read 178 x 64 x 52mm (lwh) weighing in at 560 grams. This device is rated IPX6. It handles dust, shocks and water (splashes). It's rated for operating in temperatures between -25°C and 50°C.

The Legat 355 is built to be used in hunting adventures and police operations.


  • Centered reticle during zooming
  • Scalable reticles
  • Six zeroing profiles
  • Picture-in-picture (PiP)
  • up to 4X (smooth) digital zoom
  • Completely digital signal with noise filtering
Lens55 mm
Diopter adjustment-4 +3
Eye relief distance52 mm
Optical zoom5.5 x
Digital zoom4 x
FOV (h/v)7.6 ° / 5.0 °
Focus range10m to infinity
Thermal typeUncooled
Sensor resolution (h/v)384 pixels / 288 pixels
Pixel pitch12 µm
Sensitivity45 mK
Spectral range7 µm / 14 µm
Display resolution (h/v)1024 pixels / 768 pixels
Refresh rate50 Hz
Image polarityFive color palettes
Output screen colorFull color
Package contents18650 battery, User manual, Carrying bag
Dimensions (l/w/h)178 mm / 64 mm / 52 mm
Weight560 g
Number of batteries1
Battery life6 hours
Operating temperature-25 °C / 50 °C
Environmental ratingIPX6
Law enforcement
Search & rescue
Fire fighting


Electrooptic Legat 3
Electrooptic Legat 3
Electrooptic Legat 3
Electrooptic Legat 3
Legat 3 in action
Legat 3 in the field
Legat 3 quality

Part of Legat 3 series