Kowa Genesis 44 Binoculars Instruction Manual

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Thank you for choosing the KOWA GENESIS 44 PROMINAR Series binoculars. Carefully read this instruction manual before using this product to ensure proper use and maintenance.


Kowa Genesis 44 Binoculars Instruction Manual

Kowa Genesis 44 Binoculars Instruction Manual

How To Use

To ensure the maximum performance of the binoculars, you must first adjust them to your own visual acuity. This is achieved by adjusting the eyecups and interpupillary distance, setting the diopter, and adjusting the focus. The image visibility differs according to your physical condition, surrounding environment, and weather conditions.

1 Adjusting the eyecups

This binoculars features multi-step twist-up eyecups to provide proper eye relief for use with or without eyeglasses. If you do not wear eyeglasses, extend the eyecups to the desired position by turning them counterclockwise.

If you wear eyeglasses, twist the eyecups down so that they sit flush with the ocular lens of the binoculars.

Set the eyecups at the best position for your eyes. The twist-up eyecups can be set at one of four multi-step positions. The eyecups are designed so that they can be removed when turned counterclockwise after the eyecups have been fully extended. If they are removed, thread them onto the body by turning them clockwise.

Kowa Genesis 44 Binoculars Instruction Manual

Kowa Genesis 44 Binoculars Instruction Manual

2 Adjusting the interpupillary distance

The distance between the pupils of your eyes is known as interpupillary distance. To see a single image, the binoculars must be set so that the center of the ocular lenses are the same distance apart as your pupils. To adjust the interpupillary distance, look through the binoculars at an object in the distance and move the two barrels closer to or farther away from each other until the two circular images become one.

*Do not apply excessive force to the binocular when adjusting the interpupillary distance

Kowa Genesis 44 Binoculars Instruction Manual

Kowa Genesis 44 Binoculars Instruction Manual

3 Adjusting the diopter

To adjust for the difference of visual acuity between your right and left eyes, the diopter adjustment ring on the right barrel of the binoculars must be adjusted. Adjusting the diopter will provide you with a crisp sharp image every time you use your binoculars. The binoculars is equipped with a locking diopter ring to prevent accidental readjustment.

A. Left Eye Adjustment
Select a motionless object and cover the right objective lens with your hand. Look through the left ocular lens with your left eye and turn the focus knob until your left eye is focused on the object you have chosen.

B. Right Eye Adjustment
Unlock the diopter ring by slightly extending the twist-up eyecup and sliding the diopter ring towards the eyepiece (towards you). Cover the left objective lens with your hand and look through the right ocular lens with your right eye (use the same object used for left eye adjustment). Turn the diopter ring until the image is in focus. Slide the diopter ring towards the objective lens (away from you) to lock into place.

Your binoculars are now set to your eyesight.

Kowa Genesis 44 Binoculars Instruction Manual

Kowa Genesis 44 Binoculars Instruction Manual

4 Focusing

To make focus adjustments, simply turn the focus knob while viewing through both barrels.

Specifications & Accessories

Type Central Focusing Roof Prism, Inner Focus
Magnification 8.5x 10.5x
Effective Diameter of Objective Lens 44 mm 44 mm
Number of Lenses Objective lens: 3 groups 4 elements (2 XD lenses)

Eyepiece: 3 groups 5 elements

Objective lens: 3 groups 4 elements (2 XD lenses)

Eyepiece: 4 groups 7 elements

Real Field of View 7.0° 6.2°
Field of View at 1000m/yds 122.3 m/yds 108.3 m/yds
Exit pupil 5.2 mm 4.2 mm
Brightness 27.0 17.6
Twilight Factor 19.3 21.5
Eye Relief 18.3 mm 16.0 mm
Focusing Range 1.7 m ~ ∞ (5.5 ft ~ ∞)
Interpupilary Distance 56 ~ 74 mm (2.20 ~ 2.91 in)
Length 165 ~ 175 mm (6.49 ~ 6.89 in)
Width 112 ~ 138 mm (4.41 ~ 5.43 in)
Height 64 ~ 74 mm (2.52 ~ 2.91 in)
Weight 940 g (33.2 oz) 960 g (33.9 oz)

Standard Accessories

  • Soft Case
  • Strap
  • Eyepiece Cap
  • Objective Lens Cap x2
  • Instruction manual (this document)
  • Warranty card
  • Lens cleaning cloth

* Specifications are subject to change without any prior notice.


Care and cleaning of the lens

  • Use a blower, can of air, or soft oil-free brush to remove dust from the lens surface.
  • Fingerprints and other substances left on the lens surface can cause mold growth. After removing dust, lightly wipe the lens with a soft lens cloth, gauze, or cleaning paper (available at a camera shop) dampened with a small amount of lens cleaner. Wipe the lens surface gently in a circular motion, starting from the center and working out to the edge. If the lens surface is still dirty repeat the process again, using a new piece of cleaning paper or an unused portion of the cloth. After this, use the moisture from your breath to fog up the lens and wipe it clean, using a new piece of cleaning paper or cloth.
  • A commercial lens cleaner can leave behind a film on the lens surface so use as small a quantity as possible.

How to clean the body

  • Remove dust and debris with a blower or can of air and wipe with a clean soft cloth. Do not use solvents such as acetone, benzene, paint thinner, or products that contain these solvents to clean the body. These products will discolor or deform the outer cover and lens holder.
  • Carefully brush dirt and debris from the focus knob, diopter ring, center axis, and other moving parts.


  • Storing the binocular without cleaning can leave stains on the surface and promote mold growth. Cleaning is especially important after using the binoculars in dusty or humid conditions, or after use in the rain or near the coast.
  • After cleaning, allow the binoculars to dry thoroughly indoors at room temperature, replace all lens caps, and then store the binoculars in a dry place. Place the binoculars in an airtight container together with desiccant when storing for extended periods of time.

Handling Procedures and Precautions

  1. Avoid extreme temperature changes.
  2. Do not apply force to any moving parts.
  3. Never use the binoculars in water or wash them in rapidly flowing water.
  4. Wipe away all water, moisture, and foreign debris that collects on the outside of the binoculars immediately before continued use.
  5. Do not drop the binoculars or cause a severe impact, this may damage internal optics.
  6. Storing or using the binoculars in humid conditions can easily promote mold growth on the lens surface. Store the binoculars in a well-ventilated dry place after a thorough cleaning.
  7. When storing the binoculars for an extended period of time; place them in an airtight container with desiccant, or store them in a clean, well-ventilated place.
  8. Never leave the binoculars in a car or near a source of heat as it can cause damage.
  9. Do not disassemble or modify the binoculars.
  10. It is recommended to have the binoculars undergo periodic inspection to maintain their performance.

Inquiry about repair

If there is a need to return your binoculars to the manufacturer for repair or maintenance, please contact Kowa’s distributor.

*Kois not responsible for any damage caused by mishandling and/or natural disasters such as, fire, earthquakes, floods, etc.
*Kowa is not responsible for any damage caused by an unauthorized service center.

Safety Precautions


  • Never look at the sun. Severe eye damage could occur up to the permanent loss of eyesight.
  • Make sure that small pieces and packaging such as eyepiece caps, covers, plastic bags etc. are out of the reach of children. If such an item is swallowed, serious injury, suffocation, or death could occur.


  • Do not place the binoculars in an unstable location. If it falls or tips over, injury may occur.
  • Do not use the binoculars while walking, riding a bicycle, or driving a car, to avoid causing an accident or injury to yourself and others.
  • Attach the neck strap to the binoculars to prevent them from being dropped. Do not swing the binoculars by the strap as it may strike people or other objects, causing injury or damage to the object and product.
  • Never leave the binoculars in a car or near a source of heat as it can cause damage to the product.
  • The case, neck strap, and rubber parts of the binoculars, may deteriorate after long-term use or storage.
  • Skin inflammation or irritation may occur by long time or long term contact with rubber parts. If such a condition occurs, consult a physician.
  • Moving parts of the binoculars can pinch your fingers; exercise care especially when the binoculars is being used by small children.

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