Heavy-duty fingerprint padlock

You can forget about keys; your fingerprint is the key. You can add 10 fingerprints. The first or first two fingerprints are the administrator's. They grant permissions to add, modify, or delete fingerprints.

Waterproof, allows 2,000-3,000 openings on a single charge. If the battery runs out, you can charge it with a USB power source and open the smart padlock.

Stainless zinc alloy, opening time 0.5-0.8 seconds.