规格选择

已选:8X20ED Compact

Key Specs

Lens Material extra-low dispersion ED glass
Prism System BaK-4 roof prism
Prism Coating phase coating + high-reflectivitydielectric coating
Body Material Metal body & metal retainer ring
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SPECIFICATIONS

SAGA Xiaogangpao 8x20ED / 8x42ED / 10x42ED Monocular Full Specifications

参数 8X20ED Compact8X42ED10X42ED
Magnification差异 8x8x10x
Eyepiece Diameter差异 17mm24mm21mm
Objective Aperture差异 20mm42mm42mm
Exit Pupil Diameter差异 2.5mm5.2mm4.2mm
Eye Relief差异 15.8mm17mm15mm
Field of View at 1000 m差异 119m@1000m142m@1000m113m@1000m
Close Focus差异 1.8m2m2.5m
Optical Coating FMC multi-layer broadband coatingFMC multi-layer broadband coatingFMC multi-layer broadband coating
Prism System BaK-4 roof prismBaK-4 roof prismBaK-4 roof prism
Prism Coating phase coating + high-reflectivitydielectric coatingphase coating + high-reflectivitydielectric coatingphase coating + high-reflectivitydielectric coating
Lens Material extra-low dispersion ED glassextra-low dispersion ED glassextra-low dispersion ED glass
Focus System Built-in objective focusBuilt-in objective focusBuilt-in objective focus
Waterproof Nitrogen-filled waterproofNitrogen-filled waterproofNitrogen-filled waterproof
Body Material Metal body & metal retainer ringMetal body & metal retainer ringMetal body & metal retainer ring
Tripod Mount 1/4" standard tripod mount1/4" standard tripod mount1/4" standard tripod mount
Dimensions差异 93×30mm136×47mm136×47mm
Net Weight差异 110g330g330g

Never look at the sun through the telescope — it can cause permanent eye damage or blindness.

PRODUCT OVERVIEW

SAGA Xiaogangpao 8x20ED / 8x42ED / 10x42ED Monocular Product Overview

SAGA Xiaogangpao ED monocular series with 8x20ED, 8x42ED and 10x42ED fixed-power variants. Features a classic 6-group / 8-element optical design: 3-group 4-element eyepiece, 3-group 4-element objective with ED extra-low-dispersion glass, and precision roof prism, delivering approximately 85% light transmission. Phase-coated and dielectric-coated roof prism with fully multi-coated (FMC) broadband anti-reflection coatings ensures bright, sharp and true-color images. Full metal body with internal metal retaining rings for high precision and durability; built-in objective focusing is smooth and precise. Nitrogen-filled waterproof and fog-proof for outdoor use. The 8x20ED measures only 93×30mm and weighs 110g for ultimate pocket portability; the 8x42ED and 10x42ED share a 136×47mm, 330g body for brighter views. Ideal for travel, hiking, concerts, sports and everyday carry.

  • ED extra-low dispersion glass, effectively controls chromatic aberration and distortion, sharp clear imaging
  • 6-group/8-element classic optical structure, ~85% overall transmittance
  • BAK4 roof prism with phase coating + high-reflectivity dielectric coating, excellent brightness and contrast
  • FMC multi-layer broadband coating on all glass surfaces, reflectance down to ~0.4%
  • All-metal body + metal retaining ring + metal twist-up eyecups, high precision and durable
  • Built-in objective focusing system, smooth and stable imaging
  • Nitrogen-filled waterproof and anti-fog, adapts to humid and temperature-differential outdoor conditions
  • 8x20 ED only 93×30 mm / 110 g, pocket-portable
  • 8x42 ED / 10x42 ED share 136×47 mm / 330 g metal body, solid grip
  • 6-group/8-element classic optical structure, good light transmission
  • FMC multi-layer broadband coating on all glass surfaces, reduces surface reflection
  • 8x20 ED only 93×30 mm / 110 g, pocket-portable
  • 8x42 ED / 10x42 ED 136×47 mm / 330 g metal body, solid grip
WHY THIS ONE

SAGA Xiaogangpao 8x20ED / 8x42ED / 10x42ED Monocular Product Features

ED extra-low dispersion glass

effectively controls chromatic aberration and distortion, sharp clear imaging

6-group/8-element classic optical structure

~85% overall transmittance

BAK4 roof prism with phase coating + high-reflectivity dielectric coating

excellent brightness and contrast

FMC multi-layer broadband coating on all glass surfaces

reflectance down to ~0.4%

All-metal body + metal retaining ring + metal twist-up eyecups

high precision and durable

Built-in objective focusing system

smooth and stable imaging

Nitrogen-filled waterproof and anti-fog

adapts to humid and temperature-differential outdoor conditions

8x20 ED only 93×30 mm / 110 g

pocket-portable

8x42 ED / 10x42 ED share 136×47 mm / 330 g metal body

solid grip

6-group/8-element classic optical structure

good light transmission

FMC multi-layer broadband coating on all glass surfaces

reduces surface reflection

8x20 ED only 93×30 mm / 110 g

pocket-portable

8x42 ED / 10x42 ED 136×47 mm / 330 g metal body

solid grip

IN THE BOX

SAGA Xiaogangpao 8x20ED / 8x42ED / 10x42ED Monocular Package Contents

Monocular UnitPremium Case (8X42ED / 10X42ED) or Velvet Pouch (8X20ED)Eyepiece Cap / Objective CapUser ManualPackaging Box
FAQ

Frequently Asked Questions

How many versions are available for this product?

3 versions: 8X20ED Compact, 8X42ED, 10X42ED. They differ in magnification, aperture and other specifications — switch between them in the specification table above to compare side by side.

What are the key specifications?

Magnification: 8x/ 10x; Objective Aperture: 20mm / 42mm; Optical Coating: FMC multi-layer broadband coating; Prism System: BaK-4 roof prism; Prism Coating: phase coating + high-reflectivitydielectric coating; Lens Material: extra-low dispersion ED glass. Full parameters are listed in the specification table above.

What is included in the box?

Standard package: Monocular Unit, Premium Case (8X42ED / 10X42ED) or Velvet Pouch (8X20ED), Eyepiece Cap / Objective Cap, User Manual, Packaging Box.

What are the main features?

ED extra-low dispersion glass, effectively controls chromatic aberration and distortion, sharp clear imaging; 6-group/8-element classic optical structure, ~85% overall transmittance; BAK4 roof prism with phase coating + high-reflectivity dielectric coating, excellent brightness and contrast.

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BUYING GUIDE

What to Consider When Choosing a Monocular

Magnification

Monoculars are made for carrying. 8x-12x balances clarity and stability; for higher power, use a phone adapter or tripod.

Objective Diameter

Around 25mm suits everyday carry; 42mm and above gathers more light for better birdwatching at dusk and at shows.

Field of View

A wider field of view locks onto targets faster — ideal for concerts, sports and outdoor activities with moving subjects.

ED Glass

ED (extra-low dispersion) glass significantly reduces chromatic aberration and purple fringing, delivering sharper, truer images — a key upgrade for image quality.

Waterproof & Fogproof

A nitrogen-filled waterproof structure suits all-weather outdoor use, keeping lenses clear in rain or when temperature swings cause fogging.

Light & Portable

Monoculars are built for one-handed grip and pocket carry. Weight and length decide whether you actually bring it along — lighter means more likely.

Learn more about optics Go to Optics Insights →
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SAGA Xiaogangpao Series Monocular
SAGA Xiaogangpao Series Monocular
Current variant:8X20ED Compact
Other variants:
  • Lens Materialextra-low dispersion ED glass
  • Prism SystemBaK-4 roof prism
  • Prism Coatingphase coating + high-reflectivitydielectric coating
  • Body MaterialMetal body & metal retainer ring
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