The Philips Heartstart Onsite AED is easy to use and provides voice instructions to the caregiver making it a perfect choice for home, office, goverment building, or first responders. At just 3.3 pounds, the Philips Onsite is easy to transport. It's powered by a long lasting 4 year disposable battery. Easy to use and comes with everything you need including 1 pair of Smart Pads, Battery, 5 year warranty, and an online instructional video.