Firefield 10x50 Siege Monocular (Black)
SKU: 20188891645

Firefield 10x50 Siege Monocular (Black)

Sale price$4963.50 Regular price$5515.00
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Description

Firefield 10x50 Siege Monocular (Black)Firefield 's black 10x50 Siege Monocular is designed as a highly portable field optic for long range use even in challenging light conditions. The combination of magnification and objective lens diameter ensures an ultra wide 70 apparent angle of view and a large exit pupil, with enhanced light gathering ability versus smaller comparable models. Added to these features are anti reflection fully multi coated optics and BAK4 roof prisms which maximize

Firefield 's black 10x50 Siege Monocular is designed as a highly portable field optic for long-range use even in challenging light conditions. The combination of magnification and objective lens diameter ensures an ultra-wide 70° apparent angle of view and a large exit pupil, with enhanced light gathering ability versus smaller comparable models. Added to these features are anti-reflection fully multi-coated optics and BAK4 roof prisms which maximize light transmission through the optical path, producing bright and clear high-contrast images with accurate color rendition.

The housing is made of a lightweight and durable plastic that is wrapped in a protective black rubber armor. Accents on the armor promote a more secure grip, helping to increase its handling in cold and wet weather. The optical tube is O-ring sealed to an IP67-rating making it dustproof, and submersible to a depth of 3.3' (1m) for up to one hour. The optical tube is also nitrogen-filled to be resistant to internal fogging during extreme changes in temperature and environmental conditions. Despite its size and weight the performance capabilities of this optic, when combined with the standard 1/4"-20 tripod mount, make the Siege an ideal highly portable spotting scope in the field, at the range, or in a blind.

Easy to carry and use, these optical and design features result in an optic that presents an immersive observational experience in all light and weather conditions.

Optical Performance
  • High 10x magnification enables detailed observations of distant subjects
  • Large 50mm objective lens diameter draws in copious amounts of light to boost its light-gathering ability in challenging conditions such as at dawn and dusk
  • Compact BAK4 roof prisms deliver a round exit pupil, and a crisp and clear image with limited edge distortion
  • Anti-reflection fully multi-coated optics produce views with improved color rendition, contrast, and clarity
  • Ultra-wide 70° apparent angle of view minimizes the appearance of visible hand shake that is common when holding high-power optics
  • 367-foot field of view at 1000 yards
Use and Handling
  • Large textured user-facing focusing knob is easy to find and manipulate without looking and when wearing gloves
  • Convenient twist-up rubber eyecups for comfortable use with or without eyewear
  • Standard 1/4"-20 tripod mount allows for hands-free use to reduce fatigue and hand shake that can interfere with viewings
  • Long 15.4mm eye relief helps to reduce eye strain and improve viewing comfort
  • Wide 5mm exit pupil will completely cover most pupils as they open and dilate as light fades
Construction Details
  • Lightweight and impact-resistant plastic chassis
  • Nitrogen-filled to be resistant to internal fogging when moving through extreme variations in temperature and conditions
  • O-ring sealed to a dust and waterproof IP67 rating, making it submersible to 3.3' (1m) for up to 1 hour
  • Textured black rubber armor protects against impacts while providing a slip-resistant grip
  • Integrated accents add grip strength and stability for sure handling
  • Tethered objective lens cover allows for easy use without the threat of loss
  • Broad 0 to 120°F (-17 to 49°C) operating temperature
  • Weight: 15.2 ounces
UPC: 812495022609
  • Compact BAK4 Roof Prisms
  • Fully Multi-Coated Optics
  • Wide 70° Apparent Angle of View
  • IP67-Rated, Dust and Waterproof
  • Lightweight Plastic Chassis
  • Nitrogen-Filled, Fogproof
  • Textured Black Rubber Armoring
  • Large User-Facing Focusing Knob
  • Tripod Mountable via 1/4"-20 Mount
In the Box
Firefield 10x50 Siege Monocular (Black)
  • Wrist Strap
  • Nylon Carrying Case
  • Eyepiece Cap
  • Tethered Objective Lens Cap
  • Limited 3-Year Warranty
Prism Type Roof
Magnification 10x
Objective Lens Diameter 50mm
Angle of View 7.0°, actual
Field of View 367' @ 1000 yd / 122 m @ 1000 m
Minimum Focus Distance 13.0' / 4.0 m
Exit Pupil Diameter 5.0 mm
Eye Relief 15.4 mm
Dioptric Correction None
Tripod Mount Yes (built-in)
Dimensions 6.2 x 2.6 x 2.2" / 15.7 x 6.6 x 5.6 cm
Weight 15.2 oz / 430.9 g

All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20188891645

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Jenny
Bozeman, US
★★★★★ 5
All squeaker ball companies need to start doing this!!!!
Color: Orange - Pink, Size: 2.5"(Medium)-4 Pack
So first thing I want to say is that the manufacturer of these balls has thought of something that I am honestly shocked nobody has yet thought to do. They put the squeaker reed UNDER the fuzzy shell. GENIUS! I mean really, why aren't all squeaker ball companies doing this?!?! No wondering when it will finally pop out (or in) and it definitely prolongs the life of the squeaker significantly. My staffordshire/pit bull mix adores her squeakers, that said, they never last long especially when they are in a ball (her absolute fav toy on earth) The squeaker being protected alone warrants a 5 star review because it is simply genius. The fuzzy shell has yet to deteriorate and we have had these balls now almost 3 months so they have already outlasted other brands too. Now as for the sound itself, it is definitely different from a typical squeaker, not necessarily a bad thing. It is a "mild" squeak, not obnoxious a bit high pitched. Sounds more like a baby toy squeaker than a dog toy squeaker though....I'm not quite sure how I feel about the squeak. My dog has a preference for squeaker sounds. She prefers the little squeaker sound over the deeper louder sound from the bigger squeakers, these are closer to the sound she prefers but she doesn't LOVE it like I had hoped. The only other thing is that the ball itself feels as though it was blown up and plugged tight. Meaning (and believe me when I tell you my dog has a strong jaw) it is harder than most to make these balls squeak because you can't squeeze all the way down on the ball. It takes me two hands to make them squeak so my dog has a tough time squeaking them. She continually tries though so they are keeping her occupied. Overall I do recommend these balls because they are far safer than most eliminating the concern for your dog accidentally eating the squeaker and the longevity of their potential life. Try em, they are rugged enough for heavy chewers alike!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2025
J
Verified Purchase
Janice
San Leandro, US
★★★★★ 4
Tough enough to take rough play.
Color: Multicolor A, Size: 2.0"(Small)-6 Pack
They are smaller than I thought. That’s on me because I didn’t see the size. My dog loves them anyway and they are sturdy
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Reviewed in the United States on April 4, 2026
J
Verified Purchase
Jimmy D, Seattle
Charlottesville, US
★★★★★ 5
Lucy The Dog Approved!
It's really not for me to say, with exception of the orange-blue color, which is ideal for still life. But the best part is how unglued the Lucy Dog gets at the sound of the squeaky toy knowing the hall leading to my apartment is instantly converted into a Dog Run. And she gets equally excited at the sight of any grassy area when on bike rides. So a feature that is truly the dog's bollocks is it's the perfect size for both Lucy's petite mouth and the all important emergency spare that fits securely under my bike saddle. In short, sublime perfection in Lucy The Dog's expert opinion.
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Reviewed in the United States on July 17, 2025
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DRmom
Boise, US
★★★★★ 5
Great fetch toy
Color: Multicolor B, Size: 2.5"(Medium)-6 Pack
My German Shepherd LOVES these. The size, squeak, & quality is the Perfect fetch ball. I use a blue ball throwing launcher and they work Great together. Will be buying more of these
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Reviewed in the United States on May 31, 2026
J
Verified Purchase
Joanie Kilpatrick
Louisville, US
★★★★★ 5
If you have dogs that like to play fetch, these are a must have!
Color: Orange - Pink, Size: 2.0"(Small)-4 Pack
My pups love these sp much, they won't play with any balls other than these. Not sure if it's the small size, or the fact that they squeek, but they def were a hit.
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Reviewed in the United States on May 12, 2026

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