Material: Made of durable and sturdy aluminum alloy. Secure and Reliable: Features a fingerprint lock with convenient and secure fingerprint setup. Efficient: The lock can recognize 50 fingerprints with a recognition speed of 0.5 seconds. Power Supply: Powered by 4 AAA batteries (not included), with a USB charging port for emergencies. Comes with 2 Keys: Each fingerprint lock includes 2 mechanical keys for alternative unlocking methods. Biometric Lock: Unlocks doors within 0.5 seconds using biometric fingerprint technology, ensuring safety and reliability. Large Capacity: The smart lock stores up to 50 fingerprints for easy and convenient access. Widely Used: Crafted from high-quality aluminum alloy, it's robust and durable, suitable for homes, apartments, private residences, hotels, and more. Specifications: Product Name: Fingerprint Lock Color: Dark Gray Material: Aluminum Alloy Power: 6V / 4 AAA batteries Charging: USB Type-C Unlocking Methods: Fingerprint / Key Capacity: 50 fingerprints Fingerprint Sensor: FPC semiconductor Unlocking Speed: <0.5s Operating Temperature: -20°C to +70°C Operating Humidity: 0 to 90% RH Package Size: Approx. 22.5 x 20 x 9 cm Package Weight: Approx. 900 g Package Contents: 1 * Front Handle 1 * Back Handle 1 * User Manual 1 * Mounting Kit (screws, etc.) 1 * Lock Bolt (60mm)