WIDE APPLICATION: This small lock is suitable for indoor and outdoor use. Suitable for luggage, doors, cabinets, container trucks, bicycles, rear doors, cargo, warehouses and other protection. market. You can view the lock/open history on the APP on the phone anytime. BLUETOOTH UNLOCK: No key needed. After pressing the wake-up button, enter the 6-digit key password in order, and the keypad password input can be unlocked correctly. Bluetooth button and password button can realize unlocking, never worry about losing your keys. Never worry that you can't open the lock because of a broken fingerprint LONG WORKING TIME: Built-in button battery, and no need to charge. The one-button battery can be opened and closed more than 1000 times, and can be used for more than one year. Just plug the new battery into the emergency socket and enter the button password for the unlock when there is no power. the 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