Features: 1. Professional biometric technology: fast identification, semiconductor biometric identification at any angle, fast release in 0.3 seconds. 2. Power saving: low power consumption. With an external USB emergency jack, you will never have to worry about being unable to open the lock without power. 3. Convenience: This product can record 20 fingerprints, which is convenient for many people to use. It can be used in left or right installation. 4. Ultra-long standby: After charging, it can be unlocked 3000 times and standby for 500 days. 5. Reliable: suitable for many types of drawers and cabinets. Forgotten keys and password leaks. Description: This product has the characteristics of small size, easy installation and safety assurance. Specifications: Material :Bulletproof Material Working Humidity:0-90/RH Power Supply:Built-in Lithium Battery Emergency interface: Android interface Standby time: 500 days Unlock Time: 3000 times Fingerprint capacity: 20 Antistatic grade: 8-15KW Lock Time: 0.3 seconds Operating temperature:-20 /-65 / The package includes: 1 / Fingerprint Lock Note: 1. Please allow 0-1 inch error due to manual measurement.Thank you for your understanding. 2. The display is not calibrated the same, the color of the item shown in the photo may be slightly different from the real thing.