HeartSine AED. 8 year warranty. World Leading CPR Advisor. Semi Automatic Shock Delivery.Easy to Follow Visual and Verbal Guides. Advanced Technology, Single Battery/Electrode Cartridge. There is nothing like the HeartSine Samaritan 500P public access defibrillator with CPR advisor technology.Size: 20 cm x 18.4 cm x 4.8 cm. Weight: 1.1kg