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Product Details:
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| Specification: | 7-21x 40mm | Magnification: | 7x-21x Zoom |
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| Objective Lens: | 40mm | Apparent Field Of View: | 36° - 61° |
| Exit Pupil: | 5.7 - 1.9 Mm | Relative Brightness: | 32.5 - 3.6 |
| Prism: | Porro Bk7 | Size: | 141X71X158 Mm |
| High Light: | 21x40mm Binoculars Powerful Zoom,BK 7 Porro Binoculars Powerful Zoom,BK 7 Reverse Porro Binoculars |
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Secure 21x40mm Binoculars Powerful Zoom BK 7 Reverse Porro Binoculars
7-21x40mm Zoom Lens Binoculars BK-7 Porro Prisms 7-21x Zoom Magnification 40mm Objective
The 7-21x40mm zoom Binocular Series is a complete family of porro prism binoculars designed for all types of outdoor activities. The increased light gathering ability of their large objective lens translates into greater detail and image clarity which is especially useful in low light conditions and at night. The versatile zoom feature of the Binocular Series allows the user to observe a wide field of view and then have the ability to zoom in to a subject for a more detailed look. The zoom lever allows the user to easily zoom in without taking their eyes off the subject, while a large center focus knob and eyepiece diopter adjustment make focusing quick and precise. Full rubber armor covering for a comfortable, secure and slip-free grip and provides protection against impact and shock.
Objective lens Coating:Red ,Blue,Green Fully Multi-Coated
Specification:
| Model | BMZ1142 | ||||
| Specification | 7-21x 40mm | 8-24x 50mm | 10-30x 50mm | 10-30x 60mm | 12-60x 70mm |
| Magnification | 7x - 21x | 8x - 24x | 10x - 30x | 10x - 30x | 12x - 60x |
| Objective Lens | 40 mm | 50 mm | 50 mm | 60 mm | 70 mm |
| Eyepiece diameter | 15 mm | 15 mm | 15 mm | 15 mm | 15 mm |
| Field Angle | 5.2°- 2.9° | 4.5° - 2.5° | 3.7° - 1.9° | 3.5° - 1.9° | 3.2° - 1.0° |
| Field of View @ 1000m | 90 m - 50 m | 78 m - 43 m | 64 m - 33 m | 62 m - 34 m | 57 m - 17 m |
| Field of View @ 1000yds | 270 ft - 150 ft | 234 ft - 129 ft | 192 ft - 99 ft | 186 ft - 102 ft | 171 ft - 51 ft |
| Apparent Field of View | 36° - 61° | 35° - 60° | 37° - 57° | 35° - 57° | 38° - 60° |
| Exit pupil (mm) | 5.7 - 1.9 | 6.2 - 2.0 | 5.0 - 1.6 | 6.0 - 2.0 | 5.8 - 1.16 |
| Eye relief (mm) | 14 - 12 mm | 14.5 - 12.5 mm | 14.5 - 12.5 mm | 14 - 12 mm | 13 - 10 mm |
| Diopter Adjustment | ±5 | ±5 | ±5 | ±5 | ±5 |
| Dusk Index | 16.7 - 29 | 20 - 34.64 | 22 - 38.7 | 24.5 - 42.4 | 28.98 - 64.8 |
| Relative Brightness | 32.5 - 3.6 | 38.44 - 4 | 25 - 2.56 | 36 - 4 | 33.64 - 1.34 |
| Close Focus | 10 m | 10 m | 10 m | 13 m | 15 m |
| Prism System | Porro | Porro | Porro | Porro | Porro |
| Prism Glass | Bk7 | Bk7 | Bk7 | Bk7 | Bk7 |
| Focus System | Center | Center | Center | Center | Center |
| Lens Coating | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated | Fully Multi-Coated |
| Eyecups | Fold-Down | Fold-Down | Fold-Down | Fold-Down | Fold-Down |
| Tripod Adaptable | Yes | Yes | Yes | Yes | Yes |
| Color | Custom color | Custom color | Custom color | Custom color | Custom color |
| Size (mm) | 141X71X158 | 148X72X183 | 148X72X183 | 163X76X233 | 254X125X290 |
| Weight (g) | 694 g | 840 g | 840 g | 1250 g | 1470 g |
Features:
7-21x Zoom Magnification
35mm Objective Lenses
BK-7 Porro Prisms
Multi-coated Optics
Wide-Angle FOV
Center Focus Knob
Rubber Armoring
Includes Soft Carrying Case and Neck Strap
| F.A.Q. | ||||
| Q:1.Can you produce the products with our brand? | ||||
| A: We offer logo laser engraved silk-screen printing or sticker trade make on product, | ||||
| and customized package is also available. Specific details can be discussed. | ||||
| Q: 2.How how can I pay the order? | ||||
| A: Payment terms are available by Paypal, T/T or Weston Union. Specific details can be discussed. | ||||
| Q: 3. How do you control the quality? | ||||
| A: BCI - we have quality control proecess, from procurement, production, packing to shipment all | ||||
| process are under strict control and are fully traceable. |
From finding the trail less traveled to perfecting your shot — you belong outdoors. we develop optics gear to empower you to get out and experience your passion, because we love the outdoors as much as you.BCI GROUP LTD.. NEVER MISS
Contact Person: manager
Tel: +8613302533188
