Even if it’s also portable, the Spectra S1 is bulkier (7.5 x 7.5 by 8.5 inches) and heavier (2.42 lbs).Portability: Does Spectra S1 Need To Be Plugged? The weaker Spectra S9 only has 10 vacuum levels.You can adjust the more powerful Spectra S1 up to 12 vacuum levels.The lighter Spectra S9 has a weaker pump that only goes up to 260 mmHg.The bigger Spectra S1 has a stronger pump that can go up to 270 mmHg.The Spectra S9 uses an LCD but doesn’t have a night light.The Spectra S1 has an LCD display with a night light.That’s why the massage mode is also known as the letdown mode. Many moms alternate between the massage mode and the expression mode to stimulate a second or even third letdown to collect more milk. You can’t change the cycle speed.īoth pumps use Spectra’s Natural Nursing Technology to promote letdown by mimicking the suckles of your baby for a natural breastfeeding experience. The portable Spectra S9 only has two settings: vacuum strength and mode (massage mode or expression mode).The Spectra S1 breast pump has three settings: vacuum strength, cycle speed, and mode ( expression mode or massage mode ).The Spectra S9 isn’t a hospital-grade pump and could easily wear out if you regularly use it several times a day.The Spectra S1 is a heavy-duty hospital-grade breast pump.This allows for a more hygienic milk collection compared to an open system.
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