*WH 20 - III. GIA= 11TR500
-max.obseration distance:90-180m (environmenta illuminance:10-2Lux).
-Magnification: 2.0X.
-Field of view:>15¡ã
-objective focal length: 60mm.
-objective aperrture:50mm.
-focusing range:0.8m~¡Þ.
-Diopter regulating range:-4~+4D.
-Supply voltage:3.0V.
-Battery type:AA*2.
-Overall dimension: 180x90x55 mm.
-Weight: 0.5 KG.
-IR Lamp: Comceraled inside (operating range:35~50m).