Triple Entry System: Unlock via high-speed fingerprint recognition, 4-digit mechanical code, or a mobile app (if Bluetooth enabled). Large Capacity: Spacious internal compartment securely holds multiple house keys, car fobs, or access cards. Heavy-Duty Construction: Built with a high-strength zinc alloy body to resist hammering, sawing, and prying. Weatherproof Design: Features a protective cover for the biometric scanner and dials, making it suitable for outdoor use. Removable Shackle: Can be hung on a door knob/fence or wall-mounted for permanent installation. Emergency Power: Equipped with a micro-USB port for emergency charging if the internal battery dies.