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

Product ID: 130204229

Details

Age range (description)
Adult
Brand
Zhumell
Colour
Black
Magnification maximum
25
Material
Plastic Metal
Model name
Zhumell

🎯Individual eyepiece focus precision

💡BaK4 prisms for max light transmission

🔭100mm giant objective lenses

Description

🌌 See the Universe Like a Pro — Don’t Miss the Stars!

FILTER READY - Compatible with standard 1.25-inch astronomical filters to customize your stargazing
RUGGED READY - Waterproof design with a locking metal case and tripod mount for stable, all-weather use
TAILORED FOCUS - Individual eyepiece adjustments deliver pinpoint precision for every eye
DEEP SPACE CLARITY - Giant 100mm lenses capture faint celestial details like never before
CRYSTAL CLEAR VISION - Fully multi-coated optics combined with BaK4 prisms ensure ultra-bright, sharp images

The Zhumell 25x100 Tachyon Astronomy Binoculars feature massive 100mm objective lenses and BaK4 prisms for superior light transmission, delivering stunningly bright and detailed views of deep space. With fully multi-coated optics and individual eyepiece focus, these binoculars offer precision adjustments tailored to your vision. Designed for serious stargazers, they accept standard 1.25-inch astronomical filters and come with a waterproof, rugged metal case and tripod mount for stable, all-weather observation.

Specifications

ASIN	B07BR68XVH
Age Range Description	Adult
Best Sellers Rank	246,303 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,969 in Binoculars
Box Contents	Locking metal case, objective lens cap, rain guard, lens cloth, and instruction manual all included
Brand Name	Zhumell
Coating	Fully multi-coated
Colour	Black
Compatible Devices	Standard Tripod Mount Compatible Devices
Customer Reviews	4.1 4.1 out of 5 stars (95)
Digital Magnification Measured in Multiples (Digital Zoom)	25
Enclosure Material	Plastic Metal
Exit-Pupil Diameter	4 Millimeters
Focus Description	Individual Focus
Focus Type	Individual Focus
Global Trade Identification Number	00853555008102
Item Highlight	Huge 100mm lenses, adjustable tripod, carry case included, high performance astronomy, night sky observation
Item Type Name	Zhumell ZHUG002-1 25x100 Tachyon Astronomy Binoculars with Case, Black
Item Weight	18.3 Pounds
Manufacturer	Celestron Acquisition LLC
Manufacturer Part Number	ZHUG002-1
Model Name	Zhumell
Model Number	ZHUG002-1
Number of Items	1
Objective Lens Diameter	100 Millimetres
Prism Type	Porro Prism
Product Features	Lightweight, Portable
Size Map	25x100
Specific Uses For Product	Star Gazing
UPC	853555008102
VESA Mount Type	Tripod Mount
Water Resistance Level	Waterproof
Zoom Ratio	25 multiplier x

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