The Serene Express Duo Electric Breast Pump is a personal use electric breast pump that is used to express milk from the breasts of lactating women. It is a double pump, ideal for frequent pumping. It has 2 speeds and 8 suction levels. It is lightweight and easy to clean. The pumps main unit is user friendly with an LCD screen, buttons for power, expression settings and memory and a roller for suction -. (2013 Twin Head Model). Included (1) Breast Pump Main Unit (2) Expression Collection Combo Kit (1) Extra 5 oz. Collection Bottle (1) Manual Diaphragm Add-On Kit (2) Bottle Adapter Kit (1) 12V ACDC Adapter (1) Vacuum Tube with Adapter (1) Spare Parts (Valve and O-Ring) (1) Non-woven bag (1) User Instructions and Assembly. Ideal for frequent pumping. It has 2 speeds and 8 suction levels. It is lightweight and easy to clean. It is a double pump. Weight: 4 Lbs. SKU:JEEP29790876