The basic model of the Smarty Saver Series line is very affordable and easy to use. Reliable and durable (l meter drop test - dustproof and waterproof resistance IP rate 56). It can be easily operated by anyone in the medical field (e.g. ambulance, emergency room, etc.) and non-medical field too (e.g. public or private places). It delivers one or more de-fibrillating shocks on adult or paediatric patients affected by ventricular fibrillation or ventricular tachycardia, using a thorax impedance-compensated, biphasic truncated exponential discharge (BTE). The Fully Automatic model will, if a shockable rhythm is detected, warn the user of the imminent shock delivery and after 5 seconds the de-fibrillating shock will be released automatically; the CPR phase will follow.