eufy
eufy Baby Monitor E21
$259.99
Released 2024
Best Baby Monitors · head-to-head
eufy Baby Monitor E21 vs VTech RM5766HD Smart WiFi Baby Monitor
A sourced, side-by-side comparison. VTech RM5766HD Smart WiFi Baby Monitor is cheaper at $189.99. Every spec and price links to its source.
VTech
VTech RM5766HD Smart WiFi Baby Monitor
$189.99Cheaper
Released 2022
Which is better: the eufy Baby Monitor E21 or VTech RM5766HD Smart WiFi Baby Monitor?
On the specs we track, they're closely matched. The VTech RM5766HD Smart WiFi Baby Monitor is the cheaper at $189.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | eufy Baby Monitor E21 | VTech RM5766HD Smart WiFi Baby Monitor |
|---|---|---|
| US price | $259.99 | $189.99 |
| Brand | eufy | VTech |
| Released | 2024 | 2022 |
| Camera resolution | 4K UHD | 720p HD (camera); 480p on 5-inch display |
| Connectivity | Hybrid: WiFi 2.4 GHz (remote app access) + local wireless transmission (in-home, no internet required) | WiFi 2.4 GHz (app remote access) + local DECT 6.0 direct link to 5-inch parent display |
| Range (ft) | 1000 | 1000 |
| Battery hr | 15 | 3 |
| Night vision | Yes | Yes |
| Two way audio | Yes | Yes |
| Sensors | Motion detection; sound detection; temperature reading | Temperature reading; motion detection |
| Subscription | none | optional |
| Release | 2024 | 2022 |
Sources — eufy Baby Monitor E21: eufy.com (verified 2026-06-15). VTech RM5766HD Smart WiFi Baby Monitor: target.com (verified 2026-06-15).
What's the difference between the eufy Baby Monitor E21 and VTech RM5766HD Smart WiFi Baby Monitor?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Camera resolution: eufy Baby Monitor E21 4K UHD vs VTech RM5766HD Smart WiFi Baby Monitor 720p HD (camera); 480p on 5-inch display
- Connectivity: eufy Baby Monitor E21 Hybrid: WiFi 2.4 GHz (remote app access) + local wireless transmission (in-home, no internet required) vs VTech RM5766HD Smart WiFi Baby Monitor WiFi 2.4 GHz (app remote access) + local DECT 6.0 direct link to 5-inch parent display
- Battery hr: eufy Baby Monitor E21 15 vs VTech RM5766HD Smart WiFi Baby Monitor 3
- Sensors: eufy Baby Monitor E21 Motion detection; sound detection; temperature reading vs VTech RM5766HD Smart WiFi Baby Monitor Temperature reading; motion detection
- Subscription: eufy Baby Monitor E21 none vs VTech RM5766HD Smart WiFi Baby Monitor optional
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
eufy Baby Monitor E21
Only one whitelisted outlet — Good Housekeeping — published a genuine hands-on review of the exact eufy Baby Monitor E21. The GH reviewer tested it in her own home over a year, and it also won a 2025 Parenting Award with parent-tester feedback. The verdict is glowing but entirely qualitative, with no lab-measured numbers reported. Praise covers 4K clarity, 8x zoom, effective night vision, easy setup, a compact travel mount, and Wi-Fi-optional flexibility. Treat this as single-source and unverified against a second tester. (1 sourced review, 1 lab-tested.)
Praised: 4K video quality called among the sharpest the tester has seen on a baby monitor; 8x zoom sharp enough to make out fine detail like a finger moving; Effective night vision.
VTech RM5766HD Smart WiFi Baby Monitor
No sourced tester review yet.