Camera Comparison · UK 2026
Blink Outdoor 4 vs Arlo Ultra 3

Specs, pros and cons compared side by side

Both the Blink Outdoor 4 and the Arlo Ultra 3 are security cameras. This head-to-head sets them side by side using the specs, pros and cons from our full reviews. Blink specs come from Blink’s UK support pages; Arlo specs come from our Arlo review, checked against Arlo’s own pages.

Quick verdict

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Blink Outdoor 4

Pick it for: Runs on 2x AA lithium cells, up to 2 years with default settings (the Ultra 3: removable battery)

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Arlo Ultra 3

Pick it for: 4K HDR video (the Blink: 1080p) · Apple Home, Google Assistant and IFTTT as well as Alexa (the Blink: Alexa)

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Quick comparison

Spec Blink Outdoor 4 Arlo Ultra 3
Resolution 1080p HD, 143° diagonal 4K HDR
Power 2x AA lithium, up to 2 years Removable battery
Wi-Fi 2.4GHz only 2.4GHz or 5GHz (via the SmartHub)
Weather rating IP65 IP65
Storage Needs a Sync Module; local with a Sync Module 2 (the Core has none), or cloud with a plan Cloud (Arlo Secure); local via the SmartHub
Smart home Blink app; works with Alexa Alexa, Apple Home, Google Assistant, IFTTT
Blink Outdoor 4

Pros

  • Long battery life on AA lithium cells
  • Wire-free install
  • IP65 weather rating
  • Works with the Floodlight Mount and Solaris

Cons

  • 1080p, not 2K
  • Needs a Sync Module
  • Sync Module Core in the bundle has no local storage
  • Person Detection needs a Blink plan
Arlo Ultra 3

Pros

  • 4K HDR video with a 180° view
  • 12x zoom with auto-tracking
  • Rechargeable battery that you can swap

Cons

  • Needs an Arlo SmartHub
  • Cloud history needs an Arlo Secure plan

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Which should you buy?

Why choose the Blink Outdoor 4

  • Runs on 2x AA lithium cells, up to 2 years with default settings (the Ultra 3: removable battery)
Why choose the Arlo Ultra 3

  • 4K HDR video (the Blink: 1080p)
  • Apple Home, Google Assistant and IFTTT as well as Alexa (the Blink: Alexa)

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