This device is the "Mommy I'm Here" system, a wireless device designed to help parents monitor their children in crowded public places. How does the device work? The system consists of two units: Receiver (Blue Bear): Placed with the child, it can be easily attached to shoelaces or a pant belt. Transmitter (Keychain): Kept by the parent as a keychain. Key Features: Automatic Distance Alarm: The parent's device emits an audible alert as soon as the child moves more than approximately 8 to 12 meters (25-40 feet) away. Manual Location Feature: At any time, you can press the button on the keychain to activate a loud 90-decibel alarm from the bear with the child, helping you locate them from up to 45 meters (150 feet) away. Security: The system operates on a special radio frequency to prevent interference with other devices and uses variable codes to ensure privacy. Durability: The units are water and shock resistant to suit children's movement and activity.