The ROGER COVERT C has been designed to be as simple to use as possible. Setup takes only minutes and requires no technical knowledge. Connections between components such as the earpiece and cell phone are seamless and the system can easily be hidden out of sight in a pocket. The ROGER Earpiece C is a masterpiece of miniaturized technology. It offers best-in-class secure audio transmission on 2.4 GHz with AES-128 encryption with 12 hours of autonomous operation.