max.obseration distance: 70-120m (environmenta illuminance:10-2Lux).
-Magnification: 2.8X.
-Field of view:>28¡ã
-objective focal length: 70mm.
-objective aperrture:60mm.
-focusing range:1.2m~¡Þ.
-Diopter regulating range:-5~+5D.
-Supply voltage:3.0V.
-Battery type:AA*2.
-Overall dimension: 180x80x60 mm.
-Weight: 0.5 KG.
-IR Lamp: Comceraled inside (operating range:55~70m).
-Bright-light protection: automatic bright-light control.