A ZOLL recertified AED is a reliable, easy to use defibrillator that supports rescuers with integrated, real-time feedback on compression rate and depth. Each refurbished ZOLL AED has been reconditioned and recertified through an extensive checkpoint service by a Biomedical Technician to ensure full functionality and reliability. Every refurbished ZOLL AED comes with a full one year warranty and a 30 day money back guarantee. Buy a refurbished ZOLL AED and enjoy free shipping on all orders to the United States!