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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

Kahles Helia RF 10x42

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Kahles Helia RF 10x42 Details

With the 10x42 version of the Helia RF, you are sacrificing a little in terms of the field of view and low light performance compared to the 8x42 model. However, in return, you gain a higher image resolution and therefore more reach. These Kahles binoculars have a tough aluminium chassis and are fully waterproof, they are also filled with dry nitrogen gas to protect the internal optics from fogging. This along with the powerful laser that has a maximum range of 1500 meters and many of their other impressive features make the Kahles Helia RF 10x42 an ideal rangefinding binocular for the hunter who is often out in the open and/or targeting objects at slightly longer distances.

Description of Kahles Helia RF Binoculars

Taking from their wealth of knowledge in ballistics and optics, Kahles have combined the impressive level of optics found on their flagship Helia binoculars with a high-end laser rangefinder to offer the discerning hunter a quality instrument that competes very well in within its price range and gives you the best chance of success on your hunt. These Kahles binoculars come in 8x42 and 10x42 configurations to match your preference of wide angle and superior low light performance versus long-distance observation. Available in a distinctive brown finish, the Kahles Helia RF Binoculars certainly stand out from the competition, but at the same time blend in with nature when out in the field and offer a good level of camouflage.

Important Features

As well as camouflage, the rubber armour exterior ensures a slip-free surface in all weather conditions and protects a tough aluminium chassis underneath. Fully sealed the Helia RF is both waterproof and thanks to the nitrogen filling, is fog proof as well. The integrated laser rangefinder has a range of between 10 and 1500 meters and the heads-up OLED display has five brightness settings for ranging in all light conditions. An intuitive menu navigation enables quick and easy adjustments to settings and modes. Here a standard range can be displayed as well as an angle-compensated measurement that takes ballistics into account. The rangefinder on the Helia RF also has a scan mode that continuously supplies distance information as you pan about and is perfect for moving targets. The Helia RF is powered by an easy to find CR2 battery and is said to provide over 3000 measurements before the need to change.

Optical Properties

A large, centrally located focus wheel allows for accurate single handed focal adjustments, even whilst wearing thick winter gloves and the diopter adjustment ring is positioned in the standard position near the eye-piece and enables you to compensate for any differences in vision between your left and right eyes. The twist-up eyecups have 4 click-stop positions to enable a good level of fine tuning, which in combination with the eye-relief of 18.5mm (8x42) or 16.5mm (10x42) makes these an excellent option for eyeglass wearers. Field of view on both models is more than satisfactory, indeed they compare very well with other leading rangefinder binoculars in the market.

Features of Kahles Helia RF Binoculars

  • Aluminum Body
  • Roof Prisms
  • Rubber Armoring
  • Multi-positioned Eyecups
  • Central Focusing
  • Right-eye diopter
  • Waterproof and fog-proof (Nitrogen filling)

Accessories of Kahles Helia RF Binoculars

The package is finished off in style with the inclusion of a beautifully handmade wool & felt protective case and real leather neck strap from the prestigious Waldkauz® company. These binoculars are also supplied with objective lens covers and a rainguard.

  • Handmade Leather-wool Neck Strap
  • Handmade Case-protection from alpine Loden materials
  • Objective Lens Covers
  • Rainguard Lens
  • Cleaning Cloth

Warranty Terms and Conditions

Kahles offers a 10-year guarantee on these Helia RF binoculars, with a 2-year guarantee offered on the electronics.

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Kahles Helia RF 10x42 Specifications

Binoculars seriesKahles Helia RF
Made in-
In production since2018
Warranty11 years
Type of prism Roof - Schmidt/Pechan
Variable magnification No
Magnification. 11.1929x
Diopter adjustment -4 / +4 Dpt
Lens size diameter. 42 mm
Exit pupil. 4.701 mm
Field of view - FOV... 119.7646m/1000m
Field of view (angular). 6.876°
Apperent FOV (angular). 64.8995°
Eye relief distance. 18.4684mm
Closest focusing distance. 11.1929m
Twilight Factor 20.5
Light transmittance -
Relative Brightness 17.6
Max. rangefinder range. 1678.9425m
Min. rangefinder range.10m
Measurement increment Meter, Yard
Measurement displayInternal display
Measurment time 1 s
Precision +/- 0.5 m
Inclinometer Yes
Scanning mode Yes
Target mode Yes
Ballistic App No
Reticle illumination No
Illumination color -
Usable at daytime No
Automatic Turn Off Yes
Lens coatings Fully Multicoated
Length.148 mm
Width.144.6547 mm
Height.0 mm
Working temperature range-25° / +55°
Power Supply UnitNo
Filled with Nitrogen
Focusing system Central
Diopter setting locationNo
Minimal interpupillary distance.65.0363 mm
Maximal interpupillary distance.80.7347 mm
Type of BodySingle hinge
Water proof Yes
Fogproof Yes
Tripod compliantNo
Built-in Compass No
Built in Range finderYes
Image stabilization (IS) No
Able to float No


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