It features digital adjustment of both the intensity and the interval between each pumping phase, thus creating 21 different options and allowing the mother to choose the intensity and frequency of pumping that suits her. \ the external unit of the single-pump electric breast pump weighs less than 500 grams. \ featuring a built-in rechargeable battery (type e/f, 220v) the single-pump electric breast pump provides a battery life of up to 90 minutes. \ the funnel is made of high-quality silicone, particularly soft, which ensures the mother the ability to pump breast milk most effectively and comfortably. \ the silicone funnel included in the package is size β (25mm) which easily adapts to the majority of breast sizes. \ the flexible pumping tube, silicone funnel, funnel connector, silicone valve, silicone membrane and dr brown's™ bottle are easily removed for easy washing even in the dishwasher and complete sterilization except for the external breast pump unit. \ \ compatible with dr brown's™ wide or narrow neck bottles. \