Or have low milk production because they are strong, efficient, and highly adjustable. Spectra pumps are powerful enough to increase and stabilize milk production.

Furthermore, they are much smaller, lighter, and easier to transport than hospital-grade breast pumps.

Spectra pumps are distinguished by their long motor life and high durability. If you plan on pumping frequently and have multiple children, buying one of these is preferable to renting a hospital-grade pump.

Which Spectra pump should you choose if you want to save time and energy while pumping? In this section, we will thoroughly compare the S1 and S2 spectra. To determine which breast pump is best, keep reading!

You can also visit our guide based on the differences between Snuggle Me and Dock A Tot.

Spectra Breast Pump S1 vs. S2 – Comparison

Spectra Breast Pump S1 vs. S2 – Comparison

The Spectra 1 and Spectra 2 breast pumps, both designed for use in a medical setting, share several similarities. However, there are some differences that you should be aware of before making a purchase.

Unlike the S2, the Spectra S1 has a built-in battery, making it more portable. The Spectra S1 Plus can be used without a power source. This component raises the price of an S1 Spectra pump slightly.

Aside from these two minor differences, the Spectra S2 pump is pink and significantly smaller than the blue S1 model.






Built-in Battery

Yes (lasts 3 hours of pumping)





Cycle Speed Control



Single/ Double Pumping

Both single and double

Both single and double


3 lbs

3 lbs

Night Light



LCD Screen




Two years from the date of purchase (90 days on pump parts)

Two years from date of purchase (90 days on pump parts)

Spectra S1 and S2 Breast Pumps – Similarities

Spectra S1 and S2 Breast Pumps

The Spectra S1 Plus and Spectra S2 Plus are both industrial-strength pumps suitable for hospital use (270 mmHg). Each pump has a dial that allows you to adjust the vacuum and cycle time to meet your needs.

With the purchase of any Spectra pump, a set of 24mm and 28mm flanges is included. Some mothers found these breast shields too big and had to purchase a smaller size. Flanges in sizes 20mm and 32mm are available from Spectra.

The milk is collected in wide-neck Spectra bottles that are screwed into one-piece flanges and connections.

Read the comparison between Avent and Dr. Brown Bottles and decide which is best for your baby.

Single & Double Pumpin

Breast pumping is possible with the Single and Double Spectra S1 and S2. It is easier and faster to express milk from both breasts simultaneously.

You could also drain one breast while nursing from the other.

Furthermore, research suggests that using a double pump may allow a mother to express approximately 20% more milk than a single pump. Because such milk contains more lipids, it is calorically dense and nutritionally superior.

Backflow Prevention Is Built Into The System

The Spectra S1 Plus and Spectra S2 Plus stand out from other electric breast pumps on the market due to their closed system. The built-in backflow guard prevents milk from leaking back into the suction tubes.

This feature is essential because it prevents contamination and makes pumping safer for the mother and the child.

The backflow prevention system keeps harmful bacteria, viruses, and mold away from the pump's components.

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There are a lot of different sizes for kids’ clothing. Some brands use different sizing than others, or they may have a children’s line that is sized differently from the adult line.

Spectra S1 and S2 Breast Pumps – Differences

The S2 model differs from the S1 model in terms of pricing and the presence of an internal battery. The other differences between the two are their size and color.

Let's take a look at how simple these features are to use.


This is the primary distinction between various Spectra breast pump models.


On the other hand, the Spectra S1's battery is rechargeable, whereas the Spectra S2's is not.

Because of this addition, the S1 variant is more transportable and practical. You won't waste time looking for an open wall socket to get some pump time in.

You can use spectra S1 while charging (plugged into an electrical outlet) or running solely on battery power.

You can also read the advantage and drawbacks of Mini Crib and Crib in our guide.

Charge Time

A Spectra S1 battery takes about two to three hours to charge. The Spectra S1 has a three-hour pumping time when the battery is fully charged.

Electrical Connection

The Spectra S2 breast pump, unlike the cordless S1, requires an electrical connection. The AC adaptor will only power it.

The rechargeable battery of the Spectra S1 allows you to pump anywhere, whether in the office, on the road, or in the air.

All these features make the Spectra S1 an excellent choice for breastfeeding mothers who only pump, women who travel frequently, or mothers who have returned to work.

If you're debating between the Spectra S1 and S2, remember that the S1's suction drops slightly when the battery runs low. Aside from that, there is no discernible difference between the two breast pumps in terms of power or effectiveness of milk production.



The difference in size between spectra S1 and S2 is insignificant.


There is also a difference, which isn't a deal breaker but should be mentioned. The Spectra breast pump S1 model is blue, while the S2 model is pink.

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Duplo vs. Mega blocks? It is a question that has spurred arguments for generations.Some say that Duplos are easier for younger children to put together, while others find Mega blocks more versatile.


Because of its rechargeable battery and ability to operate independently of an electrical outlet, the Spectra S1 breast pump is more expensive than the Spectra S2 breast pump.

We think the ability to fill up anywhere is worth the extra money. The Spectra S1 is an excellent portable electric breast pump worth the extra money.


A rechargeable battery is especially useful if you plan to pump frequently or need to move around while pumping. As a result, if you are financially capable of doing so, go for Spectra 1.

If you only have basic coverage, find out if you can get better coverage by upgrading your insurance. Depending on the policy, some insurance companies may pay for a basic pump outright, while others will allow you to pay the difference if you want a more advanced one.

This may appear not easy, but an expert in breast pumps will guide you through each step.

If you are a mom and must read our size guide for kid's clothing and all the difference between t and 4t.

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