eufy Baby Monitor E21, 4K camera and 5-inch 720p display

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Product guide

eufy Baby Monitor E21, 4K camera and 5-inch 720p display

eufy Security: The eufy Baby Monitor E21 pairs a camera advertised as 4K with a 5-inch 720p display, plus local monitor and app viewing. Its hybrid connection, battery operation and pan-tilt features may suit families who want both at-home and travel monitoring, but buyer feedback flags connectivity and crying-alert concerns.

At a glance

Hybrid operation offers viewing through the monitor locally or through the app when the camera's Wi-Fi switch is on and connected to a router.
The listing claims 330° pan, 60° tilt, 8× zoom and night vision for repositioning and checking detail.
The camera is described as usable while plugged in or on its built-in 5,000mAh battery. The listing estimates about 9 hours, or around 5.5 hours with night vision.
Cry and loud-noise detection, temperature monitoring and two-way audio are listed. The listing says detection sensitivity can be adjusted.

Price

£179.00Save 28%

Reference price: ~~£249.00~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Local monitor viewing can continue with the camera's Wi-Fi switch off, while Wi-Fi enables app livestreaming.
Battery operation and the stated runtime make the camera a potential option for moving between rooms or travelling without relying on a nearby socket.
The listing combines night vision, camera movement, zoom and two-way audio in a baby-monitoring setup.

Cons

Customer feedback reports connectivity problems and negative experiences with crying notifications, which matter for a monitor relied on for remote checks or alerts.

Technical specifications

20 specifications

Identity
Brand	eufy Security
Model	Baby Monitor E21

Display and video
Video format listed	MP4
Camera resolution claimed in title	4K UHD
Camera resolution in product details	4k
Monitor display claimed in title	5" 720p

Connectivity and controls
Wireless connection listed	Bluetooth
Control methods listed	App

Power and battery
Power configuration	Battery Powered
Camera battery capacity claimed	5,000mAh
Approximate runtime on battery	about 9 hours of use and around 5.5 hours with night vision

Dimensions and installation
Mounting types listed	Tabletop Mount
Dimensions listed	23.6 x 19.6 x 12.4 centimetres

Materials and protection
Material listed	Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC)

Camera movement and monitoring
Pan range claimed	330°
Tilt range claimed	60°
Zoom claimed	8×
Camera count supported in listing details	two feeds on one split screen
Family app sharing claimed	up to 5 family members
Noise reduction claimed	20 dB

What to know before buying

The stated battery runtimes are estimates. The listing gives a shorter figure specifically when night vision is used.
App livestreaming requires the camera Wi-Fi switch to be on and connected to a router. With the switch off, the listing says it connects only to the monitor.
The listing recommends updating firmware on both the camera and monitor for first use.

Listing details to confirm

Listing details are inconsistent about the video setup: the title claims a 4K camera and 5-inch 720p display, while product details separately list 4k capture resolution and HD resolution, with no display size or pixel resolution confirmed there. The details list Bluetooth, while feature copy describes Wi-Fi and local connections. The listing also claims a two-feed split screen but gives no clear camera quantity in the contents, and describes plug-in or battery power despite the separate battery-powered field. Confirm the exact camera/display configuration, included cameras and charging arrangement for the selected listing.

What’s in the box

/Check selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Families who want both a local monitor connection and optional app access when Wi-Fi is available.
Those who may move the camera between rooms or take it on trips and can work within the stated battery-runtime estimates.
Buyers looking for listed night vision, two-way audio, camera pan and tilt, zoom, and monitoring alerts.

Less suited to

Buyers who need consistently reliable connectivity or cry alerts, given the concerns reported in customer feedback.
Buyers who require a confirmed camera resolution, display resolution or camera count without checking the selected listing.

eufy Baby Monitor E21, 4K camera and 5-inch 720p display · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 411 ratings

5 stars55%55%
4 stars16%16%
3 stars11%11%
2 stars9%9%
1 star9%9%

Customer feedback highlights image quality, particularly night vision, and battery life as strengths. Reports about functionality, Wi-Fi connectivity and app use are mixed, while crying notifications receive negative feedback. These concerns are especially relevant for remote monitoring and alert-dependent use, despite the listing's hybrid connection and detection claims. Overall ratings are mixed rather than uniformly positive.

Positive themes

Customers describe image quality, especially night vision, positively.
Customers appreciate the battery life.

Negative themes

The feedback summary reports negative experiences with crying notifications.

Mixed feedback

Customers give mixed feedback on overall functionality, Wi-Fi connectivity and app use.
Opinions on value for money are mixed.

Frequently asked questions

Can the monitor work without Wi-Fi?

The listing says the camera connects to the monitor when its Wi-Fi switch is off. App livestreaming requires the switch to be on and the camera connected to a router.

How long does the camera battery last?

The listing estimates about 9 hours on battery, or around 5.5 hours with night vision. These are stated estimates, not guaranteed runtimes.

Is the camera definitely 4K and the display 720p?

The title claims a 4K camera and 5-inch 720p display, but other listing details do not consistently confirm those display specifications. Check the exact configuration before buying.

Does it include two cameras for split-screen viewing?

The feature copy claims two feeds on one split screen, but the camera quantity in the package contents is not specified clearly. Confirm how many cameras are supplied.