It has a perfect stimulation mode and its BPA free..it is ideal for easy suction and breast milk storageIt’s very easy to use and to travel withIs unique in nature is enough to contain breast milk for ur baby is a very high and standard quality when it comes to electric USB breast milk extract pump it gives all u want Infact no disappointment on Dr gym productIt makes the mother’s feel relax in their working places knowing full well that u are at the office and still breast feeds ur baby very wellIt stores enough for ur babyIt has adjustable to increase or to decrease when extracting the milk in infact this is all u need as a working class mummy’s for assurance that ur baby is not lackingIt will be a great joy to you as a mother seen urself working and breast feeding ur baby at same timeIs ideal for all mother’sWhenever u think of electric breast extracting milk pump go to Arizona store at allneeds online store u will.