The unit is supplied with a protective outer cover, which when opened by the easy sliding switch, automatically turns on. The defibrillator pads are already connected and ready to use. LED indicator lights flash with the corresponding voice prompts. Visual icons clarify the necessary actions. The adult/paediatric mode switch allows the correct setting without changing the pads. The battery is disposable, LiMnO2 Non-rechargeable, with 2 years shelf life, and 5 yrs standby life.