The Beurer BY40 electric breast pump simulates natural drinking and therefore makes use feel more pleasant. It features a memory function for an optimal personalised mode. Features: Vacuum technology: Very comfortable use with 10 stimulation levels and 10 pumping levels Memory function for optimal individualised mode Clear and illuminated display Easy assembling for the application With bottle and corresponding screw cap Silicone cushion with soft-touch surface for comfortable use Adapter for Avent and NUK bottles: Pump can also be used with those bottles Non-slip, abrasion-resistant rubber feet for secure standing Specifications: Dimensions: H:16.8 x W:10.0 x D:5.3 cm Colour: White Guarantee:12 Months Operate with mains or 4 x 1.5V AA batteries (included) Model Number: 57201 Self Assembly Required: Yes