Schutzengel is your personal car-companion who keeps an eye on you, wherever you drive to. Schutzengel warns you acoustically and visually in front of dangerous locations on your trip without distracting. These could be crosswalks, unguarded railroad crossings, schools, kindergartens and accident hot-spots. Schutzengel for safe driving.* Continued use of GPS running in the background can dramatically decrease battery life.