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Anker Eufy (ユーフィ) eufyCam S4 (屋外用防犯カメラ)【固定式と追尾式の2-in-1 / ソーラー充電 / 360°撮影 / 約800万画素 / 4K画質 / バッテリー搭載/パンチルト/防犯カメラ/セキュリティカメラ/屋外カメラ/監視カメラ】
￥31,990 ￥39,990 -20%

* Prices are as of the time of writing. Please check Amazon for the latest prices.

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eufyCam S4 Buying Guide: 4K Fixed & 2K Tracking Camera

This AI-assisted buying guide summarizes public product information. We have not used or performance-tested this product.

3.8(1,429)

JPSaver Score

Rating
3.8
Popularity
3.9

A high-resolution outdoor security camera combining 4K fixed and 2K tracking lenses with solar charging capabilities.

👍 Great for

Ideal for users wanting simultaneous wide-area monitoring and subject tracking without the need for complex wiring.

🤔 Not for you if

Not recommended for those requiring 24/7 continuous recording or users installing the device in extremely cold climates (below -10°C).

✓ Pros

  • • Dual 4K fixed and 2K tracking cameras reduce blind spots [S1]
  • • Dual infrared and radar sensors significantly reduce false alerts [S1]
  • • Includes a 5.5W solar panel capable of full charge with 1 hour of sunlight [S1]
  • • Strong deterrent features including a 105dB alarm and red/blue flashing lights [S1]
  • • Expandable storage up to 256GB microSD for long-term recording [S2]

✗ Cons

  • • Solar charging stops at temperatures below -10°C due to protection circuitry [S1]
  • • Does not support 24/7 continuous recording [S2]
  • • Fixed camera angle must be adjusted manually; app control is not available [S2]

Review

The eufyCam S4 is an outdoor security camera featuring a 2-in-1 system: a 4K fixed camera and a 2K tracking camera [S1, S2]. This allows the device to maintain a wide-angle view of the entire area while simultaneously tracking a specific subject with 8x zoom [S1]. To reduce false alerts from wind-blown trees, it utilizes a dual-detection system combining infrared (heat) and radar (motion) sensors [S1, S2]. Power is managed via a detachable 5.5W solar panel, which can fully charge the battery with just one hour of direct sunlight daily [S1]. Note that solar charging stops at temperatures below -10°C due to low-temperature protection, and the panel must be placed in direct sunlight [S1]. Storage consists of 32GB internal memory, expandable via microSD (up to 256GB), supporting up to 687 hours of recording depending on resolution [S2]. It also features AI-powered color night vision for clear nighttime imagery [S2].
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FAQ

Q. How long does the battery last? ▾

It can last up to 90 days, based on recording 10 videos of approximately 30 seconds each per day [S2].

Q. What is the nighttime image quality? ▾

It features AI-powered color night vision, allowing for full-color imagery even in very dark environments [S2].

Q. Where is the footage stored? ▾

Footage is stored on the internal 32GB memory and can be expanded with a microSD card up to 256GB [S2].

Q. Can the solar panel be installed separately? ▾

Yes, the solar panel is detachable and can be placed in a sunnier location apart from the camera [S1].

Sources and buying checks

This AI-assisted buying guide summarizes public product information. We have not used or performance-tested this product.

Guide updated: 2026-09-06

Before buying in Japan, check the exact model’s manual/app language, local warranty, required accessories and installation or compatibility requirements. Unlisted capabilities are not confirmed.

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This AI-assisted buying guide summarizes public product information. We have not used or performance-tested this product.

￥31,990 View on Amazon →