Philips Avent Single Electric Breast Pump Advanced, has Natural Motion technology, which is inspired by baby’s unique combination of suckling and massage when breastfeeding. Natural Motion technology powerfully combines suction and nipple stimulation for quick milk flow. The soft silicone flange adapts to fit both size and shape of the breast. Personalize by choosing from 8 stimulation and 16 expression levels. For ease of use, the pump remembers your settings for your next expression session. Closed system for hygienic expression, no milk in the tubing. Few parts for easy set up, use, and cleaning. Quiet motor, for a discreet experience anywhere. Pump display is easy to read with a timer to track each session. Pause and start buttons, to adjust during the session. Designed for upright pumping, thanks to the no-lean forward design. Flange fits nipples up to 1.18 inches. Model: SCF391/62