On the downside,
manual pumps generally take longer to use and require more effort.
Not exact matches
Manual pumps are
generally a lot cheaper, at the expense of having to do everything by hand.
As these
pumps generally don't empty breasts as well as their electric counterparts,
manual pumps are
generally the
pumps of choice for women who only need to
pump occasionally.
Manual pumps are
generally used outdoors where electricity may not be available.