Floating 7X50 compass waterproof ranging telescope
Origin: kunming, China
Size 7 x50
7 x ratio:
Objective lens aperture: 50mm.
Exit pupil distance: 20mm
Prism material: bak4 optical glass
Field of view: 7.1 degrees 124M/1000M
Waterproof performance: nitrogen filled waterproof.
Net weight: 890G,
The lens is made of BAK4 optical glass, coated with 12 layers of anti-ultraviolet anti-reflection film, which provides a wide field of vision and extremely clear definition
The complete set includes: a 7x50 waterproof telescope, floating shoulder strap, nylon bag, mirror cloth, moistureproof agent package, color packaging box and ranging instructions.
Characteristic: almost need not adjust very clear telescope, eyepiece objective lens is green film, one yuan coin is big eyepiece, binocular but adjustable, the eye is very comfortable, see for a long time really not giddy. Not only waterproof, mildew and fog, if you accidentally fall into the water, will not sink.
With a built-in compass, after installing the battery, press the button and the built-in compass will light up, even at night can distinguish between the southeast and northwest. 
Magnification :7X 
Target diameter :50mm 
Perspective: 7.5 degrees
Field of view :132 meters /1000 meters /395 feet /1000 yards
Eye relief :22.5mm 
Pupil diameter :7.1mm
Minimum focal length :6 m
Lens: Porro (BAK4)
Size: 19.8 x7.5 x15.5 cm
Weight: 890g
This product is waterproof binoculars, can float on the water, can measure distance, side compass, night use.
Features:
Highly sealed, waterproof and earthquake resistant:
High sealing telescope with distance measuring divider, shock resistant, earthquake resistant, waterproof, suitable for all kinds of harsh environment.
The technical indicators have reached the advanced level of similar products.
With the characteristics of clear field of view, high brightness, excellent image quality, vivid color and wide range of adaptability, it is widely used in transportation, ocean, forestry, aviation, electric power, survey and other fields.