At this Watertown Community Blood Drive you may donate either 

Blood: The most common type of donation, during which approximately a pint of 'whole blood' is given. This type of blood donation usually takes about an hour.

Power Red: A Power Red donation collects the red cells but returns most of the plasma and platelets to the donor.  These donors must meet specific eligibility requirements and have type A Neg, B Neg, or O blood.