Never used Spectra SG portable pump Introducing the NEW, easy-to-use, ultra-comfortable Spectra® SG Portable double electric breast pump. The SG Portable features independent vacuum adjustability on each side with preset cycle levels eliminating the need for manual cycle adjustments. The 1.5lbs mini and lightweight SG Portable utilizes one separate battery-operated motor for each breast. Because of this, moms can now conveniently and effectively double-pump without compromising suction leading to more efficient and productive pumping sessions.