Pairing a refined optical system with enhanced durability, the 7x50 Marine-3 BIF.GA Binoculars from Opticron feature an enlarged porro prism design with anti-reflective multicoated optics for bright, clear viewing and maintained color fidelity in a variety of lighting conditions. An 18mm eye relief and large depth of field is suitable for an array of users, which further pairs with a nitrogen-filled housing and robust aluminum alloy body for protection when viewing in inclement conditions. Additionally, the 7x magnification and individually focusing eyepieces are well-suited to general viewing of subjects both near and far.

Enlarged Porro Prisms    Anti-Reflective Multicoated Optics    Nitrogen-Filled, Water/Fogproof    Single Die-Cast Aluminum Alloy Body    Thick Rubber Armoring    Individual Eyepiece Focusing    Eye Relief: 18mm

• 7x magnification
• 50mm diameter objectives
• Porro prism optical design
• Anti-reflective multicoated optics increase clarity and contrast for more vivid viewing in a variety of lighting conditions
• 18mm eye relief and large depth of field is well-suited for glasses-wearers
• 7.1° angle of view, 49.7° apparent angle of view

• Individual eyepiece focusing design

• Fully nitrogen-filled housing for water and fogproof performance

• Specially mounted prism assemblies protect against bumps or accidental impacts

• Single die-cast aluminum alloy housing with thick rubber armoring

Related Questions and Answers

Q: 1. What size battery does this use?

A: CR2

Q: 2. Is the compass visible in the dark/ at night?

A: Yes, that's what illuminated means.

Q: 3. For stargazing and general use, which would be more suitable: model 575 or 2038?

A: For general use, there is no difference in the two models as both are 7x50. For stargazing, you may want to try the 10x50 model instead. Of course as you increase in magnification you will have to hold steady as the image will jump. I purchased the 2038 for a wilderness trip and was completely satisfied with my purchase. Either way, you won't be disappointed, Steiner binoculars are worth the money.

Q: 4. Are you limited by the eye cups not being able to twist into multiple heights? Any black outs for eye relief?

A: I do not believe you will have any issues. However if you do wear Glasses it might be an issue. I do recommend maybe going with a Model that have Eyecup's that can twist down, or fold down. Like a Steiner Model would work well.

Q: 5. what do you to clean the rubberized grips they are stickey?? yes

A: Please test a small unobtrusive area first: Try using a 70% isopropyl alcohol solution to remove the stickiness Toluene available from most home improvement stores may work better to remove the stickiness, but it is very flammable. It's a lack of polymerizer that causes the problem,. Sometimes a badly-polymerized batch from China will just turn to goo on you, but for partial cases, some boaters use 'french chalk', the powder gymnasts and rock-climbers put on their hands. Also contact KONUS directly: Tel: 305-884-7618 Email: konus@bellsouth.net

Q: 6. Will these work in the Southern Hemisphere ?

A: No and I forgot about that the _vertical_ component of the Earth's magnetic field tilts the disc/needle opposite ways in the North and South, so a weight is needed. With a normal compass you can sometimes tilt it to compensate, but with this you can't do that.I lost a huge chunk of cost savings getting it adjusted for Ausie...it cost me IIRC about $120+ at The Aust branch, with post.Nick

Q: 7. Are these stabilizing binoculars ?

A: No.

Q: 8. Is the internal rangefinder visible at all times? Can this binocular be use for astronomy too?

A: The Barska 7x50 WP Battalion Binocular does not have an illuminated rangefinder so it would be difficult to view in low light. They can be used for astronomy too but I would recommend using binoculars that do not have a rangefinder, but ones with more magnification and/or a larger objective lens diameter.

Q: 9. Country of origin?

A: The country of origin for the Opticron 8x32 Traveller BGA ED Binoculars BH #OP8X32TBGA • MFR #30648 is China.

Q: 10. It has individual eye focusing, but is it what is commonly referred to as insta-focus, ie always in focus at nearly any distance once each eye is focused?

A: I believe so. Gift for my husband who is very particular. He loves them!!GREAT purchase.Ruth