Active Member
|
[China]
Address: 151# Bohai Road, Xindu District, Chengdu, Sichuan, China (Mainland)
Contact name:Christina Yi
Sichuan Tontube Technology Co.,LTD |
|
|
10X25 Waterproof Roof Prism Binoculars BAK4 For Hiking Sighting Aluminum Body
Product Description
1.Folding Body
The body of Binocular can be folded to provide a adapted field to
view
2.FMC BAK4 Prism
Fully-multi coated optics and ultra-wide band coating help deliver
best in class brightness and clarity.
3.Water/Fog Proof
Waterproof: IPX7 level waterproof standard stay in 1.5m deep water
for 30 min.
Fogproof: vacuum and lifetime pressurising with a mixture of
nitrogen and rare earth gases to prevent fogging or hazing from
-51F to +212F,Vaporless, fogless, mirageless from well below sea
level to 8km altitude.
SPECS
| Magnification : | 10x |
| Objective Lens Dia. : | 25mm |
| Exit Pupil Dia. : | 3.25mm |
| Eye Relief : | 12mm |
| Field of view : | 142m/426ft |
| Field angle : | 8.1 degree |
| Prism material : | BAK4 |
| Focus system : | center focus |
| Lens coating : | fully multi coated |
| Near Focus : | 6m |
| Water/Fog Proof : | Yes |
| Material : | Aluminum |
| Size : | 11x11x4cm |
| Folded Size : | 7.5x11x5.5cm |
| Weight | 335g |
More products
Our Service
Customization Options
1. Appearance Options
2. Optical System Options
3. Design your own model with our R&D support
4. Color Box Options
5. Neutral / OEM Packing
High-Quality Promise
1. Standard factory test before delivery
2. Defective Rate 5‰
3. 2 Year limited warranty
More pictures
FAQ
1. Are your company a manufacturer or trading company?
We are well-experienced manufacturer specialized in producing
binoculars,rifle scopes, monocular, spotting scope, astronomical
telescopes, optics accessories etc., for more than 15 years.
2. Does your product have any warranty?
Yes,we offer 5 years limited warranty for rifle scopes vs 2 years
limited warranty for other optical instruments such as binoculars,
monocular, spotting scope, astronomical telescopes, etc.,
Damage due to misuse, ill treatment and unauthorized modifications
and repairs are not covered by our warranty.
3. What's your payment method?
We usually accept the payment methods include T/T (Bank Transfer),
Western Union, paypal and MoneyGram. Payment methods can be
adaptable to your specific requirements.
For different countries, the payment methods we accept varies from
each other.
50% deposit in advance and 50% balance before shipping. Payment
terms can be negotiated.
4. What's your shipping method?
We provide comprehensive shipping methods.
For small quantity orders we ship by DHL,FEDEX, EMS/TNT Express
service which is the fastest. Postal ways are also acceptable for
small orders.
For large quantity orders we ship by Air or by sea, we can also
ship order to buyer’s cargo agent in China.
We provide DDP service to both express way and air and sea
shipping!
5. Does your company provide customization, private label service?
YES. OEM/ODM/Customization/Making your own logo/ brand are warmly
welcome!
We can make adjustment or change to our products to meet your
demands.
We can design, innovate, develop and produce new item molds
according to your specific requirements.
Packaging can be made as per your artwork and we also provide
professional designer to make design for you free of charge if you
like
What to look for when buying binoculars
When browsing binoculars, you’ll notice they come with a set of
numbers, such as 12x60 or 10x25.
The first number refers to the magnification, and the second number
refers to the diameter of the objective lens.
Objective lens diameter
The second number is the diameter of each objective lens in
millimeters. The larger the objective lens, the more light is let
into the binoculars and the brighter and sharper the image will be.
The tradeoff: Bigger objective lenses equal binoculars that are
heavier, bulkier, and more difficult to keep stable without a
monopod or tripod.
Magnification
A pair of binoculars’ magnification is the amount of times closer
the scene you’re viewing appears compared to observing with the
naked eye. Binoculars with a magnification of 12x make objects
appear 12 times closer than they would if you were looking at them
without binoculars.
The right level of magnification depends on what you’ll be using
your binoculars for. For instance, you need 3x to 5x for the
theater, 7x for sporting events, 8x to 10x for birdwatching, and
10x to 30x for stargazing.
The exit pupil is the amount of light that reaches the eye from the
objective lens up to the eyepiece. The diameter of the exit pupil
should ideally be larger than the size of your pupil, otherwise
you’ll end up with a reduced field of view.
When thinking about the exit pupil, bear in mind the diameter of
your pupil can range from roughly 1.5mm in very bright light to
about 8mm in pitch-dark conditions. To calculate the exit pupil of
a pair of binoculars, divide the objective lens diameter by the
magnification.
The purpose of a lens coating is four-fold: to reduce glare and
reflections, to make colors appear more vivid, to increase light
transmission, and to improve contrast.
Lenses may be uncoated, coated (meaning they have one layer of
coating), multi-coated (they have several layers of coating), or
fully multi-coated (all lens surfaces inside and out have multiple
layers of coating).
You’ll find one of three types of prisms in most binoculars: BaK-4,
SK-15, or BK-7. The properties to look for in a good prism are a
high refractive index and a low critical angle — this means a prism
can transmit with less light lost as a result of internal
reflection.
BaK-4 prisms are considered the highest quality, followed by SK-15
and BK-7 prisms. That said, all are made from special optical
glass, so even binoculars with BK-7 prisms provide a decent image
quality.
Both the angle of view and the field of view express how much
scenery you can see when looking through your binoculars. Some
manufacturers list both of these specs, whereas others list just
one.
Angle of view is measured in degrees; field of view is measured in
feet. So, for most people, the field of view is more meaningful
than the angle of view.
