Fingerprint unlock: Use the advanced semiconductor contact fingerprint sensor to quickly identify and unlock your fingerprint. With each unlock, fingerprints are combined, and image recognition and self-learning algorithms further increase the success rate. Up to 20 fingerprints can be stored, which can be used by a family. Rechargeable USB design: intelligent fingerprint lock, built-in lithium battery, rechargeable for 2 hours, unlockable ten times a day, can be used for 6 months.When the battery is empty, the fingerprint lock remains locked.Please connect the USB power supply to restore the data. Theft protection: The housing of the fingerprint lock is made of a zinc alloy and the lock beam is made of corrosion-resistant and wear-resistant stainless steel. Excellent cut resistance protects your cabinet or home from thieves. Wide range of applications: suitable for cabinets, drawers, shoe cabinets, office cabinets, newspaper boxes, metal cabinets, wooden cabinets, tool boxes, mailboxes, school cabinets, etc. Small and practical: small and easy to carry. Don't worry about losing the key. The finger is the key that brings convenience to your life. Note: Please note that the new type and old type of this product are sent at random, and make sure you do not mind before ordering., Weight: 0.41005980732 pounds, Manufacturer: Sonew