Portable breast pump

Hi mummies, I’m looking for a portable breast pump that I can bring on the go when I’m out without baby. For example when going out for date nights. Best would be 1 that I can pump while walking, but is not a necessity. Looking for something that is: - Relatively silent. Since I have to pump when out, it would be great if it’s silent and people around would not notice that I am pumping due to the noise - Able to clear milk effectively. I’m currently using Medela flex. I find that it clears well, but it’s not portable. - Easy to buy & replace spare parts - Lightweight - Easy to operate Would like to have some recommendations Thank you mummies 😊