Spectra Baby USA S1 Plus Breast Pump SPS100 Blue Rechargeable 11.1V, 2000mAh, Li-Polymer. The S1 boasts so many great features, including an inbuilt rechargeable battery and is designed to truly meet the needs of moms wanting to feel confident that they have an effective, powerful breast pump. Like all Spectra pumps, the S1 is a closed system – a physical barrier between the milk and the pump ensures hygiene and motor performance. The S1 is hospital grade – strong and efficient enough to support milk supply. Used in hospitals to establish a milk supply for moms with premise. Rechargeable Battery, x2 24mm size flange, x2 28mm size flange, x2 tubing, x2 backflow protectors.Timer and nightlight x2 hygienic silicone duck bill valves, x2 collection bottles (BPA Free), x2 collection bottle caps (BPA Free), x2 bottles stands Input (100V – 240V, 50/60Hz, 600mA), Output (12V, 2A). 8809108011091