1. Fingerprint capacity : 100 groups of fingerprints.
2. Sturdy and portable : Made of aluminum alloy metal body and stainless steel shackle, Anti-oxidation, Uv resistance,Shear protection and anti-sawing.
3. Widely usage: IP 67 waterproof level, not only for home use, it can be used in suitcases , luggage, gym, shool, fence,toolbox,cases,cabinets or anywhere you want.
4. Don't have to worry about losing the key. Your finger is the key.