Spectra S1 Plus vs S2 Plus: Which Is Right for You?

They look nearly identical and share the same hospital-grade motor — but one key difference decides which pump is right for your life. Here's a clear breakdown.

Spectra Baby Canada · 6 min read

The Spectra S1 Plus and S2 Plus are two of the most popular breast pumps in Canada, and for good reason: both deliver the same powerful, closed-system, hospital-grade performance that Spectra is known for. If you've been comparing them and feeling like they're almost the same pump — you're right. But there's one difference that matters, and it comes down to how and where you plan to pump.

The one real difference: the battery

Here's the single deciding factor between these two pumps:

• The Spectra S1 Plus has a built-in rechargeable battery. You can pump anywhere — no outlet required.
• The Spectra S2 Plus is plug-in only. It needs to be connected to a power outlet to operate.

Everything else — the suction strength, the closed-system hygiene, the two-phase expression technology, the whisper-quiet motor, the adjustable settings — is essentially the same between the two models.

Choose the Spectra S1 Plus if…

• You're returning to work and need to pump in places without a convenient outlet
• You travel, commute, or are frequently on the go
• You want to pump in different rooms, in the car, or outdoors
• You like the idea of pumping beside a sleeping baby without being tethered to a wall
• The extra flexibility is worth a slightly higher price to you

Choose the Spectra S2 Plus if…

• You'll mostly pump at home, in a consistent spot near an outlet
• You want hospital-grade performance at a lower price point
• Portability isn't a priority for your routine
• You're building a setup in a nursery or dedicated pumping space

What they share

Both pumps give you:

• Hospital-grade suction up to 270 mmHg
• Closed-system design with a backflow protector that keeps milk out of the tubing and motor
• Two-phase expression — a fast massage mode to trigger letdown, and a slower expression mode to extract milk efficiently
• Adjustable suction and cycle settings so you can find what's comfortable
• A whisper-quiet motor for discreet pumping
• Single or double pumping options

The bottom line

You genuinely can't go wrong with either — they're both excellent. The question is simply whether you value portability (S1 Plus) or value (S2 Plus). For most working moms and anyone who values flexibility, the S1 Plus is worth it. For home-based pumping near an outlet, the S2 Plus delivers the same milk for less.

This article is for general educational purposes only and is not medical advice. Every breastfeeding journey is different. Please consult your doctor, midwife, or a licensed lactation consultant for guidance specific to you and your baby.