Fingerprint Padlock - Black, IP67 Waterproof, Keyless Security, USB Rechargeable Lock for Indoor Outdoor High Sensitivity: 360° full recognition, high sensitivity and response time, it only takes 0.5 seconds to unlock. Quick unlocking is possible. Fingerprint Identification: Real-time identification technology, effectively preventing fingerprint duplication. Store up to 10 fingerprints, allowing family members to easily share the lock without spare keys. High-Quality Material: The fingerprint lock is made of zinc alloy, resistant to wear, drops, and dust damage. USB Rechargeable: The charging time is about 1 hour. It can be used for 6 months (or 9,000 unlocked hours). When the battery runs out, the smart lock will remain locked; you just need to connect the USB power and reset it. Wide Range of Uses: Can be used as a door lock, cabinet lock, bicycle lock, etc.