POWERFUL: Hospital grade breast pump with up to 250 mmHg suction strength to ensure you get the most milk each session. This high quality electric breast pump can be used for single or double pumping. PORTABLE BREAST PUMP: Clip onto your waist band and pair with a pumping bra for a completely hands free breast pump experience. Use EITHER 4 AA batteries OR the included AC power adapter. COMFORTABLE: Mom controlled suction delivers personalized comfort with a wide range of suction and speed settings. Ameda pump parts include multiple flange sizes for a customized experience. CONVENIENT: Easy setup with simple instructions that make it effortless for new moms to use right out of the box - Ameda Mya Joy Breast Pump accessories included for your convenience. SAFE: Includes Ameda's Universal HygieniKit- the world's only FDA-cleared patented protective barrier that helps protect breast milk from contaminants.