Medela's crème de la crème, this double electric pump packs punch and style. One of the smallest double electric breast pumps in the world, the Freestyle is the most popular choice for busy, mobile, modern moms. Its heavy duty 12v motor makes it ideal for expression of milk over 4x a day sans worries of weakening suction strength. Lightweight, portable and equipped with an internal rechargeable battery, the Freestyle allows a mother to express anywhere -- car, plane, train, courtroom, clinic, office, studio, restaurant, moviehouse, poolside, etc. Swiss designed, mother is assured of quality of parts and efficiency of milk expression. Operates using the patented 2-Phase Expression Technology, which assures moms of more milk in less time. To check, the authentic 2-Phase Technology means 100-120 cycles per minute (true stimulation) for the first phase and 45-60 cycles per minute (true expression) for the second phase. Based on research, this is how human infants suck. Pump pressure should be within 250-350mmHg at maximum level. Its digital display provides information on battery life, suction strength, and time elapsed. Parts that come into contact with breastmilk are BPA-free. Warranty: 2 years, motor and 6 months, battery.