As a breastfeeding mom who works full time this little machine has definitely come in handy. It's small, portable and able to strap to your body and the suction cups can strap to your nursing bra, so that your hands are free to continue working.
It has a memory mode so that you can customize your own program or just wing it and increase and decrease suction as you go. It's not attached to a bag so if something happens to your bag (my kitty decided to "mark" ours) you can just put it in another less discreet bag. Definitely recommend this breast pump for the power pumpers.