This pair of Sigillu Secure Encrypted Phones is a pair of Nokia N73 unlocked phones bundled with strong encryption software which makes them absolutely secure and unbreakable. It was developed especially for those who work every day with sensitive data and know how important it is to prevent confidential information from falling into the wrong hands. It passed highly advanced security tests performed by both civilian and governmental experts, and is licensed by the Israeli Ministry of Defense. Encrypted text messages can be exchanged while in a secured voice conversation. Key Features: - Military-grade strong encryption key - 256-bit session key which replaces the encryption every 5 seconds - End-to-end encryption (ciphered communication between two devices) - No additional hardware required (software-only solution) - Implemented on regular phones and GSM cellular networks - The encryption process is not perceived by third parties - The user is not prevented from updating the phone firmware or operating system - One mobile phone for both regular and secure calls If somebody manages to illegally intercept your communication, its content will be protected even against the most sophisticated interception devices. Sigillu encrypted phones provide secure communications anytime, anywhere.