Portable, Rechargeable battery, LCD lit screen with timer, Usage up to 12x a day (upgraded models), Letdown/massage mode and expression mode, Adjustable suction strength; as you increase the suction, the speed will slow down. Quiet motor Closed system (backflow preventor prevents backflow of liquid which causes mold) 290 mmHg Comes with 2 breastkits (wide neck bottles, valves, flanges, tubing, backflow preventor) Up to 290 mmhg suction strength