Celestron Oceana 7x50 CF / RC 71189-A

Product Description
Oceana 7x50 CF/RC Marine feature backlit illuminated liquid dampened magnetic compass: Excellent navigational tool for land or sea.
From the Manufacturer
Oceana 7x50 Marine (item #71189-A) Oceana 7x50 Marine
Item #71189-A Overview
Details
Specs
Overview
Oceana 7x50 Marine - General Features 7x50
Center Focus for quick and easy focusing
Fully Multi-Coated for maximum resolution and high contrast views
Waterproof and Fogproof with nitrogen purging for all weather protection
Rubber covered for protection and a firm grip
Illuminated Compass built-in for direction location
Reticle built-in for determining distance and size of objects
Calculator Dial for quick distance measurement
Aluminum Body
Tripod adapter fitting for tripod mounting for increased stability
Soft Carrying Case for protecting the binoculars
No Fault Lifetime Warranty
Details
The Oceana marine binocular from Celestron is a waterproof binocular designed for marine use but it also useful for various land based observations as well.
This feature-packed model includes an illuminated compass for direction finding, reticle for distance measurement, and a convenient center focus optical performance is appreciated with the BaK-4 prisms and fully multi-coated optics for ultra sharp images with high contrast and has a large 50mm objective lens to offer maximum image brightness even in low light conditions, like dusk and dawn.
Specs
Optical Design: Porro
Diameter: 50 mm ( in)
Magnification: 7 x
Angular Field of View:
Linear Field of View (@1000 yds): 394 ft ( m)
Linear Field of View (@1000 m): 131 m ( ft)
Exit Pupil: mm ( in)
Eye Relief: 22 mm ( in)
IPD Min: 56 mm ( in)
IPD Max: 72 mm ( in)
Near Focus (Binoculars): 33 ft ( m)
Prisms: BaK-4
Optical Coatings: Fully Multi-Coated
Weather Proof: Waterproof
Weight: 41 oz ( g)

Received these yesterday, as I have only had a slight chance to test them out I can only give first impressions.
Optical quality, very, very good, not perfect but very good especially for the price. (5 of 5 stars at this price point)
Build Quality, Fantastic, they feel very sturdy, they are covered by a rubber armor and they are completely waterproof. (5 of 5 stars)
Comfort, pretty good, a bit stiff but I expect them to loosen up over a period of use. (4 of 5 stars)
Instruction manual, with these Binoculars, there is some math involved to get the size or the distance to an object. While the instructions were adequate, they were lacking a bit. (4 of 5 stars)
Accessories (lens caps, binocular bag), This is a double edged sword, the bag is great I expected to get a very cheap case, what it came in is a well padded rigid soft case that well exceeds my expectations. The lens so much, the front caps are great, they are connected to the the body so you won't loose them. The rear cap is almost worthless. It is a single cap designed to go over both but can't be fitted securely. (4 of 5 stars because of the rear cap)
Compass, Unfamiliar with nautical compasses I was a sort of surprised not to see a N or an S or an E or a W. But after 5 seconds I was able to deal with The illumination was great and its easy to read. This is a great way to know exactly where you're looking at any time. The compass, integrated with the rangefinder is a huge plus to me. (5 of 5 stars)
I really like these binoculars, I am hoping they live up to my expectations in long term use. I'm taking them out this weekend to test out a bit more and see if the rangefinder is true in its readings and see if the optics are as good as I think they are.
A close crossing with an inbound ship on the outbound side of the shipping lanes (and a mile outside of the wrong lane to boot) reminded me that it isn't enough to know where you are, and assume ships will stay in their designated lanes. Not only do you need to see them clearly from a distance, you need an accurate bearing to detect potential collision course. It was this incident that drove my decision to buy this piece of safety equipment without delay.
I was very impressed when I took these glasses out of the box, they have a solid, high-quality look and feel -- from the optics (clarity is awesome) and adjustments, all the way down to the case they come with (padded, solid closure, orange trim for visibility at night.)
Perhaps the feature that lets the Celestron Oceana stand toe-to-toe with much more expensive models, is the quality of its built-in bearing compass. Liquid dampening is a must, out on the ocean, without this a compass is nearly useless. More, I checked its accuracy against the fluxgate compass built into my GPS, it's exactly on. And its backlight is ideal, the compass is easy to read down to the degree, day or night.
I did have a tiny bit of difficulty seeing the compass at first glance, but quickly realized that the rubber eye cups and my nose were keeping the lenses a little higher than desirable. Very slight downward pressure corrects their position.
Over all I'm very pleased with the purchase, and given the Celestron no-fault lifetime warranty, I'm sure I'll be using them for years to come.