The portable spectra also plugs in! It’s not as strong when the battery isn’t fully charged and it’s not plugged in. When it’s plugged it’s plenty strong.
@Naomi good to know thank you!
I use the portable bc I pump all kinds of random places that don’t have plugs. I.e. my car.
I have the S1 from my first and it’s great. Did a great job emptying me each time and never had any issues with it. The portability is a must especially if it’s your second IMO!