West Marine 400C User manual

Owner’s Manual
400C
18407643
WITH COMPASS
400
18407650
WITHOUT COMPASS

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1Fold-down eyecups
2Internal center focus adjustment
3Diopter adjustment
4Strap holder
HIDDEN FROM VIEW
5Main body
6Compass housing [400C only]
7Compass light switch [400C only]
8Battery compartment [400C only]
HIDDEN FROM VIEW
9Objective lens
• Waterproof, dust-proof, all-weather binoculars are designed for boating and
other rugged outdoor activities
• Nitrogen gas inside the binocular eliminates fogging and mold on internal
lens surfaces even under extremely severe conditions, including rainstorms
and high humidity
• 400C’s internal rangefinder scale and illuminated compass help users
determine the distance or size of objects, as well as their direction
• High-index BaK-4 prisms produce a bright, sharp image with vivid contrast
for detailed viewing
• Rubber-coated body provides great shock resistance and a comfortable,
secure grip
• Internal center focus
• Compact and convenient
400C 18407643 (with compass)
400 18407650 (without compass)
Fig. 1
1 1
2
3
6
7
8
5
9
4 4

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Eyepiece Distance Adjustment
For best viewing, the binoculars should be adjusted for the individual user so that eyepieces line up with the user’s eyes. The
distance between the eyes, called “interpupillary distance,” varies from person to person. To achieve perfect alignment of lens
to eye, follow these simple steps:
1. Hold your binoculars in the normal viewing position.
2. Grasp each barrel firmly. While looking through the binoculars, move the barrels closer together or farther apart until you
see a single circular field. Reset your binocular to this position each time you use it. The eye distance setting is indicated
on the scale located on the binocular hinge.
Diopter Setting and Internal Center Focus
The diopter setting corrects for vision differences between the user’s two eyes, so the binoculars can be focused correctly for
both eyes. To adjust the diopter:
1. Set the right eyepiece to 0 and look at an object that is approximately 100 feet (30 m) away.
2. Keeping both eyes open, cover the right objective (front) lens with your hand.
3. Adjust center focus wheel until image in the left eyepiece appears sharp.
4. Cover the left objective (front) lens, then rotate the right eyepiece until the image appears sharp again.
5. The diopter setting is now correct for your eyes, and you need only adjust the center focus to view objects at different
distances. Note the diopter setting for future use.
Fold-down Eyecups
To use binoculars while wearing eyeglasses or sunglasses, fold the rubber eyecups down. This will allow you to bring your
eyes closer to the binoculars, improving your field of view. To use binoculars without glasses, fold the rubber eyecups up into
the extended position..
Reading the Rangefinder Reticle [400C]
The rangefinder scale is a useful navigation tool if you know the size or distance of an object. If you know an object’s size, you
can use the rangefinder to calculate its distance. Conversely, if you know the object’s distance, you can calculate its size.
1. To measure distance, simply apply the following formula:
Example (to find distance): if the object is 20 meters high and the rangefinder scale
reading is 16 (Fig. 3), then:
2. To measure object size, the formula becomes:
Example: if the object is 1,250 meters away and the rangefinder scale reading is 16,
then:
20 m (height) x 1000
16 (rangefinder scale reading)
1000 x Object Height
Rangefinder Scale Reading
Distance =
= 1,250 m (distance)
Distance x Rangefinder Scale Reading
1000
1,250 m (distance) x 16
1000
Object Size =
= 20 m (object size)
Fig. 2

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Using the Compass [400C]
READING: When you look into the eyepiece, you will see a compass window with figures and lines below the field of view. The
compass shows orientations as angles: north is 0°, east is 90°, south is 180° and west is 270°. Between numbers, each line
represents 1°. After aligning the object with the rangefinder scale in the center of the field, read the compass.
LOCATING YOUR POSITION: These binoculars, together with a chart and protractor, can be used to
locate your position. For example, the binoculars plus the map in Fig. 3 could be used to determine the
location of a boat sailing within the map’s area:
1. From the boat, use the binoculars to locate the buoy shown on the chart (Fig.3). In this example,
the compass would show that the buoy is located 190° from the boat.
2. Use this information to determine the direction from the buoy to the boat. (To do this, subtract 180°
if the object’s reading is 180° or greater; add 180° if the reading is less than 180°.) So, 190°
(direction from boat to buoy) - 180° = 10° (direction from buoy to boat).
3. On the map, draw a line from the buoy extending in a 10° direction (10° from magnetic north). You
now know your boat is somewhere along this line (Fig. 4).
4. To determine your boat’s exact position, use the binoculars to locate a second object, the
lighthouse. The compass will show that the direction from your boat to the lighthouse is 300º.
5. Then calculate the direction from the lighthouse to your boat: 300°- 180° = 120º.
6. Finally, draw a line extending 120° from the light-house (Fig. 5). Your boat is located at the point
where the two lines intersect.
Compass Light [400C]
To read your compass in the dark, press the compass light switch (8) to illuminate it in red light.
Batteries [400C]
Two batteries (included) are required to operate the compass light. To install: unscrew the battery cover (9) on the
underside of binoculars’ main body. Install the two batteries, positive (+) side facing up, and screw the cover back into
place. All of the following batteries are suitable for use with your 400C binoculars: AG12, GP186, LR43, and 1176A.
Instructions for Care
To protect the binoculars, store them in their case and keep them in a dry area. Never leave them out in direct sunlight (such
as on a car dashboard) for long periods of time. Avoid banging and dropping.
Extremely Important Note
It is not necessary to clean binoculars internally. Any attempt to take the binoculars apart or clean them internally will result
in damage and void the warranty.
Fig. 3
Fig. 4
Fig. 5

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West Marine Limited Warranty
What Does This Limited Warranty Cover?
West Marine warrants to the original retail purchaser of the West Marine product, where the purchase is made in the United States, that
the product will be free from defects in materials and craftsmanship with only the limitations or exclusions set out below.
How Long Does This Limited Warranty Last?
This limited warranty is valid for thirty (30) years from the date of the original retail purchase from West Marine within the United States
(the “Limited Warranty Term”).
The warranty period is not extended if we repair or replace a warranted product or any parts. West Marine reserves the right to change
the availability of limited warranties, at its discretion, but any changes will not be retroactive and will only apply to subsequent purchases.
What Does This Limited Warranty Not Cover?
This limited warranty does not cover:
• Software.
• Commercial or industrial use or operation.
• Normal maintenance items or normal wear and tear.
• Problems resulting from re or submergence in water or other liquids [DELETE IF PRODUCT OF WATER PROOF].
• If the product was damaged, modied or altered by you.
• If the product was used as part of any conversion kits, subassemblies, or any congurations not appropriate or contemplated for this
product or its use.
• If damage or loss occurring during return shipment of the product to West Marine or its authorized service representative.
• If the product was subject to improper service, repair, installation, storage, maintenance, alteration or application.
• Problems that result from accident, neglect, abuse, misuse or issues with electrical power.
• Problems caused by accessories, parts or components added to the product that are not appropriate for this product or its use.
THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO
STATE (OR JURISDICTION TO JURISDICTION). WEST MARINE’S RESPONSIBILITY FOR MALFUNCTIONS AND DEFECTS IN HARDWARE IS
LIMITED TO REPAIR OR REPLACEMENT AS SET FORTH IN THIS WARRANTY STATEMENT. ALL EXPRESS AND IMPLIED WARRANTIES FOR
THE PRODUCT INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, ARE LIMITED IN TIME TO THE LIMITED WARRANTY TERM (AS SPECIFIED ABOVE). NO WARRANTIES,
WHETHER EXPRESS OR IMPLIED, WILL APPLY AFTER THE LIMITED WARRANTY TERM HAS EXPIRED. SOME STATES DO NOT ALLOW
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
WE DO NOT ACCEPT LIABILITY BEYOND THE REMEDIES PROVIDED FOR IN THIS LIMITED WARRANTY OR FOR CONSEQUENTIAL OR
INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, ANY LIABILITY FOR THIRD-PARTY CLAIMS AGAINST YOU FOR DAMAGES,
FOR PRODUCTS NOT BEING AVAILABLE FOR USE, FOR PERSONAL INJURY AND/OR FOR LOST PROPERTY, DATA OR SOFTWARE. OUR
LIABILITY AND THE MAXIMUM AMOUNT FOR WHICH WE ARE RESPONSIBLE WILL BE NO MORE THAN THE AMOUNT YOU PAID FOR
THE PRODUCT THAT IS THE SUBJECT OF A CLAIM. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
What Must I Do To Keep the Warranty in Effect?
• You must keep your receipt or other appropriate documentation as proof of the date of sale and purchase.
• You must keep your serial number or order number for the product. This is found on the product itself or on your receipt.
• You must not do any of the things that will make the warranty invalid as provided for in this warranty statement.
• You must use, install, maintain and operate the product in accordance with published specications and the user’s manual.
What Do I Do If I Need Warranty Service?
• Before the warranty expires, please call us at 1-800-BOATING. Please also have your West Marine serial number or order number
available.
• When you contact us, we will issue a Return Material Authorization Number for you to include with your return. We will also provide
you the address of where to ship the product.
• You must return the product to us in its original or equivalent packaging, prepay shipping charges, and insure the shipment or accept
the risk if the product is lost or damaged in shipment.
What Will West Marine Do?
During the Limited Warranty Term, if the product you return to us proves to be defective in materials or workmanship and not for the
reasons which would otherwise disqualify it (as explained above), we will:
• Repair the product or, if we are unable to repair it, replace it with a comparable product that is new or refurbished;
• Or, as an alternative, at West Marine’s option, we will refund you the original purchase price;
• If we repair or replace the product, we will return the repaired or replacement product to you; and
• Pay to ship the repaired or replacement product to you if you use an address in the United States (excluding Puerto Rico and U.S.
possessions and territories). Otherwise, we will ship the product to you freight collect.

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If we determine that the problem is not covered under this warranty, we will notify you of this when we return your product to you to the
address you provide us in the United States (excluding Puerto Rico and U.S. possessions and territories).
We use new and refurbished parts made by various manufacturers in performing warranty repairs and in building replacement parts and
systems. Refurbished parts and systems are parts or systems that have been returned to West Marine, some of which were never used
by a customer. Replacement parts and systems are covered for the remaining time left in the Limited Warranty Term for the product you
bought. West Marine owns all parts removed from repaired products.
Maintenance is the Owner’s Responsibility
Cleaning, polishing, lubricating, replacing lters, tuning, replacing worn parts, using your purchased product according to the user’s manual,
and regularly maintaining your purchased product is your responsibility.
What if I purchased a Plus Protection Plan?
Service will be provided to you under the terms of the Plus Protection Plan contract. Please refer to that contract for details on how to
obtain service.
How State Law Relates to the Warranty
This warranty gives you specic legal rights, and you may also have other rights which vary from state to state.
Caution
Do not use this product to view the sun. Looking at or near the sun with or without binoculars
may cause instant and irreversible damage to your eyes. Eye damage is often painless, so there
is no warning to the observer that damage has occurred until it is too late. Children should
always have adult supervision when using binoculars.