eufy Breast Pump S1 Wearable Electric Breast Pump

eufy Security: The eufy Breast Pump S1 is a wearable electric breast pump with heating technology, battery power and app-based customisation of pumping rhythm, suction and speed. Its in-bra format is intended for hands-free use, while the listed 150 Millilitres capacity and included sizing inserts help clarify practical fit and collection needs.

At a glance

Wearable design for hands-free, in-bra pumping, according to the listing.
Heating technology is a central feature of the S1.
The eufy Baby app is described as allowing customisation of pumping rhythm, suction and speed.
Manufacturer claims suction up to 300 mmHg and a noise level of 46 Decibels.

Price

£129.00Save 32%

Reference price: ~~£189.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

App-based adjustment of rhythm, suction and speed offers more control over the pumping routine.
Heating is built into the stated feature set rather than dependent on an optional accessory.
The listing includes sizing inserts in 17/19/21 mm and a nipple measurement card.

Cons

The listed pump capacity is 150 Millilitres, which may require emptying during sessions for users who collect more than that.

Technical specifications

10 specifications

Identity
Brand	eufy Security
Model	Wearable Breast Pump S1

Power and operation
Power configuration	Battery Powered
Operation mode	Electric
Noise level	46 Decibels

Capacity and dimensions
Capacity	150 Millilitres
Dimensions	12.6L x 7.1W x 11.8H centimetres

Materials and care
Material listed	Silicone
Material type free	BPA Free
Dishwasher safe	No

What to know before buying

Listing details to confirm

The listing claims up to 300 mmHg suction and 30% more output, but these are manufacturer claims rather than independently established performance, the output claim is attributed to user feedback in the listing. The app feature requires use of the eufy Baby app. Before first use, the listing instructs sterilising washable components by boiling with continuous stirring or steaming for 5 minutes, it advises against microwave sterilisation and says the pump is not dishwasher safe.

What’s in the box

Included

Breast Pump S1
Dust covers
Cleaning brush
Nipple measurement card
Sizing inserts (17/19/21 mm)
Storage bag
Duckbill valve

Who is it for?

A good fit for

People seeking a wearable, hands-free electric pump with built-in heating.
Buyers who want to adjust pumping rhythm, suction and speed through the eufy Baby app.
Users for whom the listed 150 Millilitres capacity and 17/19/21 mm sizing inserts suit their needs.

Less suited to

Buyers who need a stated capacity above 150 Millilitres per pump.
Anyone looking for a dishwasher-safe or microwave-sterilisable pump.

eufy Breast Pump S1 Wearable Electric Breast Pump · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 3,423 ratings

5 stars64%64%
4 stars10%10%
3 stars6%6%
2 stars6%6%
1 star14%14%

The available aggregate is 4.0 out of 5 stars from 3,423 ratings. That indicates a generally favourable overall rating, but the distribution also includes 14 percent one-star ratings, ratings alone do not explain users’ experiences or establish how the pump performs for a particular fit, routine or milk output.