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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25x100 Tachyon Astronomy Binoculars with Case, Black

Product ID: 73500112

Details

Age Range (Description)
Adult
Brand
Zhumell
Magnification Maximum
25
Objective Lens Diameter
100
Special Feature
Lightweight

🌕100mm objective lenses for max light capture

🔭25x magnification for deep-space clarity

🛠️BaK4 prisms & fully multi-coated lenses for crisp, bright views

Description

🌌 Own the night sky — see what others miss with Zhumell Tachyon!

TRIPOD READY DESIGN - Heavy-duty build with tripod adapter ensures steady, shake-free stargazing sessions.
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 viewing.
PRECISION BA K 4 PRISMS FULLY MULTI COATED OPTICS - Experience razor-sharp, high-contrast images with minimal glare.

The Zhumell 25x100 Tachyon Astronomy Binoculars combine massive 100mm lenses with 25x magnification and premium BaK4 prisms to deliver bright, sharp views of celestial objects. Fully multi-coated optics and individual eyepiece focus ensure precision and clarity, while compatibility with standard astronomical filters and a built-in tripod adapter make these binoculars a professional-grade tool for serious stargazers seeking immersive deep-space experiences.

Specifications

ASIN	B07BR68XVH
Age Range Description	Adult
Best Sellers Rank	#3,067 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #1,480 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 (100)
Enclosure Material	Metal
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	18.3 Pounds
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	Full Size
Specific Uses	Star Gazing
UPC	853555008102
Warranty Description	Limited Lifetime
Water Resistance Level	Waterproof
Zoom Ratio	25 multiplier x

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