UNLOCK METHOD: The cabinet lock has two unlock methods: Bluetooth app and smart card. You can check the unlock record at any time, so you don't have to worry about the safety of your property. INTELLIGENT INDUCTION: Anti-theft lock has no opening hole, is internal installation and use a map. So you don't need a key to unlock, it has a smart sensor and is very convenient to use. DARK INVISIBLE LOCK: The Blutooth drawer lock does not leak from the lock body, but is an invisible mortise lock, which does not affect the appearance. Will not harm your cabinets and drawers. LONG LASTING: The wardrobe lock is powered by 4 AAA batteries (not included) and can be used for up to one year, so it has a long service life and you can use it for a long time. EMERGENCY SITUATIONS: The keyless lock supports emergency external power supply in case of battery failure. You can use emergency external power to unlock.