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| Feature | Eufy Cam S4 | Ring Spotlight Cam 4K Pro (2nd Gen) | Winner |
|---|---|---|---|
| Price | $349.99 | $249.99 | Ring Spotlight Cam 4K Pro (2nd Gen) |
| Rating | 4.2 | 4.3 | Ring Spotlight Cam 4K Pro (2nd Gen) |
| Solar Charging | YES | NO | Eufy Cam S4 |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi, 5 GHz WiFi | Ring Spotlight Cam 4K Pro (2nd Gen) |
| Storage | Internal, MicroSD Card Slot, Cloud | Cloud | Eufy Cam S4 |
| RTSP | YES | NO | Eufy Cam S4 |
| Alerts | Motion, People, Animals, Vehicles, Familiar Faces | Motion, People, Vehicles, Familiar Faces | Eufy Cam S4 |
| Light | YES | Spotlight | Tie |
| Warranty | 1 year | 1 year | Tie |
| Weather Resistance | IP65 | IP65 | Tie |
| PoE | NO | NO | Tie |
| 2K Video | YES | YES | Tie |
What the differences mean
Power
The Eufy Cam S4 runs on a rechargeable battery charged by solar, so it mounts almost anywhere. The Ring Spotlight Cam 4K Pro (2nd Gen) plugs into a socket with a long USB-C adapter and stays tethered to that outlet, though it never needs charging.
Storage
The Eufy Cam S4 keeps footage on 32GB built in plus a microSD card up to 256GB or a HomeBase, with no mandatory subscription. The Ring Spotlight Cam 4K Pro (2nd Gen) has no local storage at all, so video history, 24/7 recording and smart alerts require a Ring plan.
Lighting
The Ring Spotlight Cam 4K Pro (2nd Gen) has two 600-lumen adjustable spotlights and an 85 dB siren for deterrence. The Eufy Cam S4 has a spotlight and a siren for color night vision, but it does not light the ground as brightly.
Smart home reach
The Eufy Cam S4 works with Alexa, Google Home and Home Assistant and supports RTSP when wired to power. The Ring Spotlight Cam 4K Pro (2nd Gen) works with Alexa and Home Assistant only, with no Google Home, and no RTSP stream for third-party recorders.
Connectivity and zoom
The Ring Spotlight Cam 4K Pro (2nd Gen) connects on dual-band Wi-Fi 6 and offers up to 10x zoom. The Eufy Cam S4 is limited to 2.4GHz Wi-Fi but answers with a dedicated pan-tilt zoom lens and up to 8x auto zoom for tracking.
Which one to buy if
- there is no power near the mounting spot
The Eufy Cam S4 runs on a solar-charged battery and needs no outlet, while the Ring Spotlight Cam 4K Pro (2nd Gen) must stay plugged in.
- you want to keep your video without a monthly fee
The Eufy Cam S4 records to 32GB built in, a microSD card or a HomeBase for free; the Ring Spotlight Cam 4K Pro (2nd Gen) saves nothing without a Ring plan.
- you want the camera to light up and deter as well as watch
The Ring Spotlight Cam 4K Pro (2nd Gen) pairs two 600-lumen spotlights and an 85 dB siren with its 4K view, more light and noise than the Eufy Cam S4.
- you want a wire-free camera that physically follows a subject
The Eufy Cam S4 auto-tracks with its pan-tilt zoom lens while running on battery, something the plugged-in Ring Spotlight Cam 4K Pro (2nd Gen) cannot do.
- you already live in the Ring and Alexa ecosystem
The Ring Spotlight Cam 4K Pro (2nd Gen) joins the Ring app and streams to an Echo Show, with radar motion detection and custom zones.
- + Solar Charging: YES
- + Storage: Internal, MicroSD Card Slot, Cloud
- + RTSP: YES
- - Price: $349.99 vs $249.99
- - Rating: 4.2 vs 4.3
- + Price: $249.99
- + Rating: 4.3
- + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi
- - Solar Charging: NO vs YES
- - Storage: Cloud vs Internal, MicroSD Card Slot, Cloud
What owners say
Owners of both 4K cameras lead with the picture, then split over how each is fed and stored. Eufy Cam S4 owners rave about the dual-lens tracking, a wide lens holding the scene while a zoom lens follows people and pets, plus sharp 4K and free local storage on 32GB built in, a microSD card or a HomeBase, all kept running by solar charging; their warnings are 2.4GHz-only Wi-Fi and a heavy app. Ring Spotlight Cam 4K Pro (2nd Gen) owners praise the sharper 4K over older Ring models, the 10x zoom, radar alerts and the plug-in power that ends battery swaps, but caution that no video is saved without a subscription.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Eufy Cam S4
- Ring Spotlight Cam 4K Pro (2nd Gen)
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Frequently Asked Questions
Which is better overall: Eufy Cam S4 or Ring Spotlight Cam 4K Pro (2nd Gen)?
The Eufy Cam S4 for buyers who want a wire-free 4K camera that stores video locally without a subscription. The Ring Spotlight Cam 4K Pro (2nd Gen) is the pick for a Ring or Alexa home that values radar motion detection, bright spotlights and a 10x zoom and accepts a subscription.
What is the biggest difference between the Eufy Cam S4 and the Ring Spotlight Cam 4K Pro (2nd Gen)?
Power and storage. The Eufy Cam S4 runs on battery and solar and records locally for free, while the Ring Spotlight Cam 4K Pro (2nd Gen) is plug-in and keeps no video without a Ring subscription.
Do the Eufy Cam S4 and Ring Spotlight Cam 4K Pro (2nd Gen) both record in 4K?
Yes. Both record 4K, so the choice turns on power and storage. The Eufy Cam S4 adds a tracking zoom lens and runs wire-free on solar, while the Ring Spotlight Cam 4K Pro (2nd Gen) offers radar alerts, spotlights and a 10x zoom on mains power.
Does the Ring Spotlight Cam 4K Pro (2nd Gen) work without a subscription?
You get Live View, notifications, two-way talk, the spotlights and the siren without one, but no saved video. The Eufy Cam S4 is the one of the two that records locally at no cost.
Who should buy the Eufy Cam S4?
Buyers who want 4K detail, auto-tracking and local storage with no wiring, especially where the mounting spot has no power and solar can keep the battery charged.
Who should buy the Ring Spotlight Cam 4K Pro (2nd Gen)?
Ring and Alexa households that want a 4K spotlight camera with radar motion detection, a long zoom, bright lights and a siren, and are comfortable paying for Ring to store the footage.
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