Suitable for children and the elderly, your finger is the key that stops thieves from cracking the code. You don't have to worry about losing your key or that thieves know the code because they won't be able to get a hold of your finger. Note: Any skin contact may open the lock in factory mode, please enter the administrator's fingerprint according to the installation video before using. The lock is easy to use thanks to an advanced fingerprint recognition chip that unlocks quickly in 0.5 seconds and can capture 2 administrators and up to 19 fingerprints. The 150MAH lithium battery can support up to 6 months of standby time by charging via USB. Fully charged in one hour, it can open the lock more than 9,000 times. The fingerprint lock is made of zinc alloy, the lock body and the latch are made of zinc alloy, high-strength steel wire, seamless connection, anti-theft, anti-dust, anti-erosion, gym lock is your best choice to protect your private property from thieves, fingerprint lock is compact and classic. Easy to carry and widely used. Suitable for indoor and outdoor, gym lockers, luggage, golf bags, handbags, school lockers, furniture, cabinets, bicycles and other goods you want protect. Note: When the red light flashes, it can still be unlocked 60 times, please charge it in time.