I was very disappointed by this draws milk. For two and a half I'm using a rented Kitett a pharmacy (the new model, not the former) and I bought the swing for the resumption of work. The kitett or 120ml takes a swing as much time (15 minutes) has hardly takes 20 ... Furthermore the box I was sent in the Calma nipple while it was indicated above. So I think having a repackaged product. I returned and bought (after testing) its little brother the freestyle works on battery power and is more powerful.