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The lightweight and ergonomic HELIA 42 RF perfectly combines brilliant optics with reliable targeting up to 1,500 m on common hunting targets (deer, tree). It stands out for intuitive simple handling and useful hunting features like patented EAC (Enhanced Angle Compensation) and scan mode.
Easy and reliable targeting up to 1,500 m on common hunting targets
Intuitive simple menu navigation
Patented EAC-function (Enhanced Angle Compensation) for angle correction
Long-range (LR) function for ranging easy to detect targets up to 4,500 m
Premium-quality OLED display with five manual brightness settings and display in meter or yards
Scan Mode, temperature and air pressure display
Extra long battery lifetime ~ 4,000 measurements
HELIA 42 RF 10x42
Magnification 10
Objective lens diameter (mm) 42
Eye relief (mm) 16
Exit pupil diameter (mm)4,2
Pupil distance (mm) 58 - 73
Twilight factor (ISO 14132-1) 20,5
Field of view (m/1.000m) 107
Field of view (°) 6,1
Field of view apparent (°) 61
Near focus (m)5
Diopter compensation (dpt)± 4
Measure range - standard (m)5 - 1.500
Measure range - LR (m) easy to measure targetsup to 4.500
Range-finding accuracy (m)+/- 1 up to 100
+/- 2 up to 1.000
+/- 0,5% over 1.000
Display typeOLED
Brightness levels5
Measurement duration1 s
Display Auto-off5 s
Adjustment position twist-in eye cups4
Waterproof (nitrogen filling)√
Height x Width x Depth approximately (mm) 145 x 132 x 73
Weight (g)900
m/yds display√
Laser category1M
Single measurement√
Scan measurement√
Angle correctionEAC-Function
LR measurement√
Temperature measurement√
Air pressure measurement√
Battery typeCR2 Lithium (3V DC)
Battery lifetime~ 4.000 range cycles
Guarantee10 years
Guarantee electronics2 years
Operating temperature mechanical (°C)-10 / +55
Operating temperature electronical (°C)-10 / +55
Accessories (inclusive)Ocular and objective cover,
Carrying strap with quick release fastenerOcular and objective cover,
Carrying strap with quick release fastener
Assume the distance from the target is 400 m
Assume an angle of 40°
Rifleman's rule result: 306 m
EAC function result: 321 m
As the example shows, the distance determined by the EAC function differs from that of the rifleman's rule by 15 m, a distance which, depending on calibre, projectile, barrel length, etc. can already have a significant impact on the accuracy of a shot.
