HeartSine samaritan AEDs are the lightest and smallest FDA-cleared AED machines available — weighing just 2.4 lbs. Built to last, the samaritan PAD 350P and samaritan PAD 450P AEDs are perfect for school, office, and business settings. HeartSine Pad-Paks combine the battery and electrode pads into a single cartridge with one expiration date. Maintenance couldn’t be easier. Learn more about HeartSine here.