The Interpupillary Distance (max): 72mm (2.83") and Interpupillary Distance (min): 56mm (2.20").

Are these good for long distance viewing such as over a body of water?

25X100 are intended for astronomy so, yeah, long distance viewing.

between the two eye sockets, there is a small dial with a 60 and 70 printed and a white dot on the outside of the dial. What is this?

This is for adjusting the distance between your eyes. The center piece acts as a pivot point. moving the eye sockets closer or further apart while looking though the binoculars you'll see an over lapping image until properly adjusted. The dot will then act as a reference to quickly a line the eye sockets..

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Zhumell 25x100 Tachyon Astronomy Binoculars with Case, Black

Zhumell 25x100 Tachyon Astronomy Binoculars with Case, Black

Product ID: 332025606

Details

Age range (description)
Adult
Brand
Zhumell
Max. magnification
25
Objective lens diameter
100
Special features
Lightweight

🌕100mm objective lenses for max light capture

🔭25x magnification for deep-space clarity

🛡️Fully multi-coated BaK4 prisms for crisp, bright views

Description

🌌 Own the night sky — see what others miss!

POWERFUL 25 X MAGNIFICATION - Zoom into lunar craters and planetary details with industrial-strength clarity.
MASSIVE 100 MM OBJECTIVE LENSES - Capture more light for stunningly bright and detailed night sky observations.
CUSTOMIZABLE FOCUS FILTER READY - Individual eyepiece focus plus 1.25-inch filter compatibility for tailored stargazing.
TRIPOD READY FIELD TESTED DURABILITY - Heavy-duty design with built-in tripod adapter for steady, extended viewing sessions.
PRECISION BA K 4 PRISMS MULTI COATED OPTICS - Experience ultra-clear, sharp images with superior light transmission.

The Zhumell 25x100 Tachyon Astronomy Binoculars combine massive 100mm lenses with 25x magnification and premium BaK4 prisms, delivering bright, sharp views of celestial objects. Fully multi-coated optics and individual eyepiece focus ensure precision, while compatibility with standard astronomical filters and a tripod adapter make it a versatile, professional-grade instrument for serious stargazers and astronomy enthusiasts.

Specifications

ASIN	B07BR68XVH
Age Range Description	Adult
Best Sellers Rank	#109,270 in Electronics ( See Top 100 in Electronics ) #482 in Binoculars
Brand	Zhumell
Built-In Media	Locking metal case, objective lens cap, rain guard, lens cloth, and instruction manual all included
Coating	Fully multi-coated
Color	Black
Compatible Devices	Standard Tripod Mount Compatible Devices
Customer Reviews	4.1 4.1 out of 5 stars (271)
Enclosure Material	Metal, Plastic
Features	Lightweight, Portable
Focus Type	Individual Focus
Global Trade Identification Number	00853555008102
Item Type Name	Zhumell ZHUG002-1 25x100 Tachyon Astronomy Binoculars with Case, Black
Item Weight	8.3 kg
Magnification Maximum	25
Manufacturer	Celestron Acquisition LLC
Manufacturer Part Number	ZHUG002-1
Model Name	Zhumell
Model Number	ZHUG002-1
Mount Type	Tripod Mount
Objective Lens Diameter	100 Millimeters
Prism Type	Porro Prism
Size Map	25x100
Specific Uses	Star Gazing
UPC	853555008102
Water Resistance Level	Waterproof

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