Best Breast Pumps · head-to-head
Willow Go vs Spectra S1 Plus
A sourced, side-by-side spec comparison. Spectra S1 Plus is cheaper at $225.99. Every spec and price links to its source.
Side by side
| Willow Go | Spectra S1 Plus | |
|---|---|---|
| US price | $349.99 (MSRP per onewillow.com (regular price; recently 40% off to ~$244.99 with promo); launched at $329 in 2022) | $225.99 (Current price on spectrababyusa.com and Target) |
| Brand | Willow | Spectra Baby USA |
| Released | 2022 | — |
| type | wearable | electric_double |
| suction levels | 15 | 12 |
| max suction mmhg | 295 | 270 |
| rechargeable battery | true | true |
| hospital grade | true | true |
| closed system | true | true |
| weight oz | 13.6 | 48 |
| release | 2022 | — |
Sources — Willow Go: onewillow.com (verified 2026-06-19). Spectra S1 Plus: spectrababyusa.com (verified 2026-06-19).