Spectra Breast Pump Comparisons
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| Pump | Spectra Dew 300 | Spectra Dew 350 | Spectra S1 | Spectra S2 | Spectra S9 |
| Dual Expression |  |
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| Power Supply | Mains only | Mains only | Rechargeable battery or mains | Mains only | Rechargeable battery or mains |
| Cycle Speed | 38 rpm | 38 rpm | 38 - 54 rpm | 38 - 54rpm | Adjusts with suction |
| Vacuum Strength | 300 mmHg | 350 mmHg | 300 mmHg | 300 mmHg | 300 mmHg |
| Adjustable Cycle | |
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Adjusts with suction |
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| Massage mode for letdown | |
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| Nightlight | |
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| Weight of pump | 0.99 Kg | 0.99 Kg | 1.12 Kg | 0.99 Kg | 0.3 Kg |
| Warranty period | 1 year | 2 years | 2 years | 2 years | 1 year |