Wide Angle Porro Prism Binoculars 8x40 Nitrogen Filled for Bird Watching

Quick Information

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.

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.

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 Fixed 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

Packing