Camera Comparison · UK 2026
eufyCam S4 vs Reolink Altas

Specs, pros and cons compared side by side

Both the eufyCam S4 and the Reolink Altas are security cameras. This head-to-head sets them side by side using the specs, pros and cons from our full reviews. eufy specs come from eufy’s own product pages; Reolink specs come from Reolink’s own product pages.

Quick verdict

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eufyCam S4

Pick it for: Wide view and a tracking close-up in one camera (the Altas: fixed view, no pan or tilt) · 4K bullet camera plus a 2K PTZ (the Altas: 4MP, 2560 x 1440)

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Reolink Altas

Pick it for: Continuous recording on battery (the S4’s 24/7 recording needs direct power) · Dual-band Wi-Fi 6 (the S4: 2.4GHz only) · IP66 weather rating (the S4: IP65)

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Quick comparison

Spec eufyCam S4 Reolink Altas
Resolution 4K bullet + 2K dual-lens PTZ, 8x hybrid zoom 4MP (2560 x 1440), 110° diagonal
Power 10,000mAh swappable battery; detachable 5.5W solar; USB-C 20,000mAh battery, up to 540 days (motion mode); Solar Panel 2 (6W) sold separately
Wi-Fi 2.4GHz only Wi-Fi 6, 2.4GHz and 5GHz
Weather rating IP65 IP66
Storage 32GB built in, microSD up to 256GB, HomeBase S380 microSD up to 512GB, Reolink Home Hub and Home Hub Pro, Reolink Cloud
Smart home Alexa and Google Assistant Google Assistant and Alexa
eufyCam S4

Pros

  • Wide view and a tracking close-up in one camera
  • Works without a HomeBase
  • Swappable battery and solar panel
  • 24/7 recording when wired

Cons

  • 2.4GHz Wi-Fi only
  • 24/7 recording needs direct power
  • Some features need HomeBase S380
  • eufy’s FAQ says HomeKit is not currently supported
Reolink Altas

Pros

  • A 540-day battery rating in motion detection mode
  • Continuous and pre-recording options on battery
  • Colour night vision
  • Dual-band Wi-Fi 6

Cons

  • No infrared night vision
  • Solar panel sold separately
  • Fixed view, no pan or tilt
  • 4MP rather than 4K

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Which should you buy?

Why choose the eufyCam S4

  • Wide view and a tracking close-up in one camera (the Altas: fixed view, no pan or tilt)
  • 4K bullet camera plus a 2K PTZ (the Altas: 4MP, 2560 x 1440)
Why choose the Reolink Altas

  • Continuous recording on battery (the S4’s 24/7 recording needs direct power)
  • Dual-band Wi-Fi 6 (the S4: 2.4GHz only)
  • IP66 weather rating (the S4: IP65)

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