Fingerprint Unlock - Use the advanced semiconductor contact fingerprint sensor to quickly identify and unlock your fingerprint. With each unlock, fingerprints come together, and image recognition and self-learning algorithms further increase the success rate. Up to 20 fingerprints can be stored that can be used by a family. Rechargeable USB Design - Smart fingerprint lock, built-in lithium battery, rechargeable for 2 hours, can be unlocked ten times a day, can be used for 6 months. When the battery is empty, the fingerprint lock will remain locked. Connect the USB power adapter to restore the data. ANTI-THEFT The fingerprint lock shell is made of zinc alloy and the stainless steel lock beam resistant to corrosion and wear. Excellent cut resistance protects your closet or home from thieves. Wide range of uses: suitable for cabinets, drawers, shoe cabinets, office cabinets, newspaper boxes, metal cabinets, wooden cabinets, tool boxes, mailboxes, school cabinets, etc. Small and convenient: small and easy to carry. Don't worry about losing the key. Finger is the key that brings convenience to your life. Note: Please note that the new type and old type of this product will be sent randomly, and make sure you do not mind before ordering., Weight: 0.41005980732 Pounds, Manufacturer: Sonew