Features: brand new and high quality Artificial intelligence, the second-generation chip is upgraded. Every for time it is unlocked, it will continuously improve the pass rate through fingerprint stitching and for image recognition self-learning algorithm, and the more it is used, the more sensitive it is. Adapt to a variety of drawer doors: TV cabinets, cabinets, bedside cabinets, wardrobes, shoe cabinets. Fast fingerprint recognition, high recognition rate and high security. Upgrade the second generation chip, process the system efficiently, and be more stable and safe to protect your family. Professional biometric technology, rapid identification does not wait. Specifications: Material:Aluminium Alloy Color:Black/Golden/Red Bronze/Silver Type:22mm/32mm Size:as the Picture Show Note: Please allow an error of 0-3mm due to manual measurement. Monitors are not calibrated same, item color displayed in photos may be showing Package includes: 1 Set Intelligent Fingerprint Drawer Lock