Replacement Pediatric Pad-Pak for the HeartSine Samaritan 350P, 360P or 500P AEDs. This system contains both the replacement electrodes and replacement battery pak contained in one unit. The Pediatric Pad-Pak is pink in color, for use on patients younger than eight years of age and weighing less than 25 kg/55 lbs.The Pediatric Pad-Pak has a 4-Year lifespan.