Bak4 Prism 8x40 Binocular Telescope Fogproof Blue Telescope For Adults

Bak4 Prism 8x40 Porro Prism Binoculars Fogproof Telescope Blue for Adults

Optical System

Fully Multi-coated Lens

All lens are fully multi-coated, light transmittance is 95% above, colorful image provided.

BAK4 Prism

Advanced BAK4 prism with coating, designed for porro system, getting bright and crisp film than BK7 prism.

Wide Angle View

Special designed optical system achieves wide view angle at 8°. See more scene at long distance.

Large Objective Lens

40mm large objective lens for brighter film with less aberration.

Body Design

Nitrogen Filled Lens

100% pure nitrogen filled lens getting IPX7 waterproof / fog proof / dust proof performance, working perfect in bad condition.

Tripod Available

Metal screw interface for tripod, connecting more stabilized and durable also.

Rubber Skin Surface

Rubber skin covered surface with Anti-slip pattern design. Stabilized handle feeling for long time use.

Soft Rubber Eyecup

Soft fold-down rubber eyecup, touching more comfortable compared with twist-up eyecup.

About Porro Prism

Porro Prism light path is fully reflect by the prism inside, which almost no light loss in whole optical system, film brighter and own high definition. While roof prism need special coating process to avoid phase difference in multi-refraction, also the film with light loss will be dark. Based on same optical performance, porro prism has more competitive price than roof prism.

Specification

Magnification 8x
Objective Diameter 40mm
Field of View (1000m) 140m/420ft
Field Angle 8°
Near Focus 4.5m
Exit Pupil 5mm
Eye Relief 16.7mm
Focus System Center Focus
Size 19.8x6.5x19.1cm
Weight 814g

Other Information

1. Customization

1) Customized card: Thank you card for your customer

2) Accessories: Tripod / mobile holder

3) Logo: logo printing on binoculars / wiping cloth / strap / carry bag

4) Customized gift box: with your own logo and pattern

2. Packing:

1) Inner Box: binoculars / wiping cloth / strap / instruction note / soft carry bag

2) Master Carton: 12 units per carton / size 49x37x45cm / G.W.:22KG

3. Payment: Accept T/T / Paypal / L/C or other payment method according to your convenience

4. Warranty: 2 years limited warranty

5. Delivery & Shipping:

Deliver

1) Production starts after down payment confirmed.

2) Order deliver after fully payment confirmed.

3) Order production time 15-30 days.

Shipping

1) For small quantity order or sample order, we suggest DHL and EMS.

2) For large quantity order we suggest shipping by sea or air way.

View More

IPX7 Waterproof

Multi-coated Optical Glass

Porro Prism

Established in 2011, Sichuan Tontube Technology Co.,LTD,was born for Armory factory served for Military Purpose. 

We are the leading manufacturer in China that is dedicated & committed to providing a One Stop Solution Service from designing, researching, developing, producing, and marketing various kinds of riflescopes - Short Range, Middle Range and Long Range, binoculars, monoculars, spotting scopes, zoom telescope, astronomical telescope, optics accessories, etc.,

Located in Chengdu - the "Land of Abundance", Sichuan Tongdudayi Technology Co.,LTD has over 300 employees including more than 30 research engineers and over 40 QC assistants.

We have an annual output value over US$20million with annual production capacity of 800,000 units, and the GMP certified manufactory area covers around 3,000 square meters.

By owning the worldwide most advanced core technology of Optical Instruments Field, we pride ourselves as the NO.1 ranking optics company on optics quality, good sales, and excellent pre-sales and after-sales service!

State-of-the-art technology, Outstanding optical performance, Rapid target acquisition, Ergonomic design and Unmatched quality help our company occupy a significant role among world-leading optics suppliers in niche market.

Our employees exceed at managing mechanical processing, forging, precision casting, finishing, heat processing, optical creation, designing, imaging and the coldworking of multi-coating., etc.,

We have been providing private label/OEM service to thousands of companies, big and small, in USA, Europe, Pacific Rim countries, such as U.S.A, Canada, UK, Germany etc.,

"Quality is our culture" - We have been engaged in OEM and ODM service for companies all over the world!

Company Capability
1) 20 Years Experience & 5 Years Quality Warranty
- With the most complete product series,one of the market leader for high-end optical instrument including riflescopes,binoculars and monocular for > 20 years.
- Offer 5 Years Quality Warranty.

2) Optical Instruments models
Offers the most comprehensive optical instruments models (>250 models)

3) OEM/ODM
Provides OEM/ODM/Customized service and have served >100 brands including 20 famous brands

world, big medium and small. At present, our business partners located throughout every continent, developing around 100 brands, include 30 famous brands - Discovery, Vector, Marcool, Visionking, Nikula, Bresser, etc.,

"Continuous Technology Innovation & New Products R&D is our concepts" - Just as nature never comes to a standstill and constantly changes, our company is always striving with a tireless curiosity and relentless passion to set new standards with technical innovations, increase product range and insisting on developing new products each month.

Sichuan Tontube Technology Co.,LTD welcomes customers from all over the world. We are sincerely dedicated to partnering with you and enabling you to pursue win-win situation.