Fingerprint UnlockYour fingers are your keys. Unlock them quickly in 0.5 seconds. Up to 20 different fingerprints can be saved, including 2 Administrator fingerprints. It is easy to use. Don't worry about losing your key or forgetting your password. [Long-term operation, low voltage alarm] The smart padlock has the characteristics of low power consumption and low voltage. a long standby time. Full charge supports one year standby and can be unlocked more than 2000 times. When unlocking, if the battery is low, the smart lock will stay locked and show different light status. Just use a USB cable to power the lock and it will start working again. [Strong and Weatherproof] This miniature fingerprint padlock is carefully crafted and forged from a solid body. aluminum alloy and a stainless steel handle for excellent cut resistance. IP67 weatherproof, dustproof and waterproof. Wide ApplicationPortable smart box lock, small size, carry it anytime and anywhere. A smart and powerful universal fingerprint lock apply inside and outside home, gym, door, warehouse, cabinet, shed, suitcase, purse, box, bike, bicycle, luggage , fence, garage, office, etc. Size: 43*64mm