WIDE APPLICATION: This small lock is suitable for indoor and outdoor use. Suitable for luggage, doors, cabinets, container trucks, bicycles, back doors, goods, warehouses and other protection SUPPORT TYPE: Download APP connects to the lock via Bluetooth, support IOS and Android system, and works with 99% mainstream brand mobile phone in the market. You can view lock/open history on APP on phone at any time BLUETOOTH UNLOCK: No key is needed. After pressing the wake-up button, enter the 6-digit key password in sequence, and the keyboard password input can be unlocked correctly.Both bluetooth and password button can realize unlock, never worry about lost your keys.Never worry about can't open the lock because of broken fingerprint LONG WORKING TIME: Built in Button Battery, and no need to charge. One button battery can be open and close lock for more than 1000 times, and can be used for more than a year! Just plug the new battery into the emergency jack and enter the button password to unlock it when no power HIGH PERFORMANCE: The smart padlock lock body is made of zinc alloy and the lock beam is made of stainless steel for superior cut resistance, keep your home always in a safe situation