The Philips HeartStart FRx is known as a “rugged” AED, which means that it is able to with stand harsh environmental situations, such as strong rain, dust or jetting water! This unit will also remain in tack from a one meter drop onto concrete! The FRx has and 8 year manufacturer’s warranty with the unique capability of becoming pediatric capable with the simple insertion of a pediatric key. Not only is the FRx tough enough for many circumstances, it is also extremely simple to use! There are light up pictures, voice prompts, and the i-button, which will assist the rescuer in providing proper CPR during a rescue. This is a popular unit for police officers, construction sites, or any environment where the conditions may be unpredictable.