Medela Pump In Style with MaxFlow Power Adapter.Power adapter for use with Medela Pump In Style 9 Volt breast pumps. Convenient option to have an extra power supply on hand whenever needed, replace a damaged power supply, or keep a dual-voltage power option when traveling outside the United States.Features & BenefitsDual-voltage, 110 - 240V: Use your Pump In Style Breast Pumps even while traveling outside the U.S.Medela Authentic Spare Parts provide quality and performance you can trust: Have a spare power source for work or travel, or a replacement for a lost or damaged adaptorDesigned & Tested: Works with Medela 9 volt Pump In Style Breast Pumps.