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Eufy SoloCam S40 (2K) — Security/dash cam · 2K
Eufy

Eufy SoloCam S40 (2K)

Security/dash cam · 2K

82
/ 100
From $150
VS
Opal Tadpole wins by 2
Opal Tadpole — 2K
Opal

Opal Tadpole

2K

84
/ 100
From $175
Specdex verdict

Opal Tadpole takes it — here’s why.

In our weighted Specdex score, Eufy SoloCam S40 (2K) lands at 82 and Opal Tadpole at 84. That puts Opal Tadpole ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Eufy SoloCam S40 (2K) if…

  • ✓Weatherproof (most)
  • ✓Night vision
  • ✓Cloud + local storage options

Pick Opal Tadpole if…

  • ✓USB-C connectivity (modern)
  • ✓Auto framing (some)
  • ✓Software tuning
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Build

Tie

Compared on the build sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Features

Opal Tadpole

Compared on the features sub-score

Opal Tadpole leads on features (84 vs 82).

Image

Opal Tadpole

Compared on the image sub-score

Opal Tadpole leads on image (82 vs 78).

Value for money

Eufy SoloCam S40 (2K)

Specdex score per dollar at MSRP

Eufy SoloCam S40 (2K) more score per dollar ($150 vs $175).

Eufy SoloCam S40 (2K) 82
vs
84 Opal Tadpole

Score breakdown

Eufy SoloCam S40 (2K)
82
image 78
features 82
build 86
value 82
Opal Tadpole
84
image 82
features 84
build 86
value 82

Specs side-by-side

Eufy SoloCam S40 (2K) versus Opal Tadpole — full spec comparison
Spec Eufy SoloCam S40 (2K) Opal Tadpole
Type
Security/dash cam
—
Resolution
2K
2K
Release year
2022
—

Eufy SoloCam S40 (2K)

Pros
  • +Weatherproof (most)
  • +Night vision
  • +Cloud + local storage options
Cons
  • −Cloud storage subscription
  • −Wi-Fi dependency
  • −Privacy considerations

Opal Tadpole

Pros
  • +USB-C connectivity (modern)
  • +Auto framing (some)
  • +Software tuning
Cons
  • −Fixed focal length on most
  • −Low-light varies wildly
  • −Mounting can be fiddly

FAQ: Eufy SoloCam S40 (2K) vs Opal Tadpole

Which is better, Eufy SoloCam S40 (2K) or Opal Tadpole? +

Opal Tadpole scores 84 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.

Is Eufy SoloCam S40 (2K) worth the price? +

At $150, Eufy SoloCam S40 (2K) delivers a Specdex score of 82 — strongest in build.

Is Opal Tadpole worth the price? +

At $175, Opal Tadpole delivers a Specdex score of 84 — strongest in build.

Does Eufy SoloCam S40 (2K) or Opal Tadpole last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for features, Eufy SoloCam S40 (2K) or Opal Tadpole? +

Opal Tadpole — leads on features (84 vs 82). Compared on the features sub-score.

Which is better for image, Eufy SoloCam S40 (2K) or Opal Tadpole? +

Opal Tadpole — leads on image (82 vs 78). Compared on the image sub-score.