Features:Material: Made of aluminum alloy material, durable and sturdy to use. Safe and Reliable: Fingerprint recognition lock, convenient fingerprint settings,safe and secure.High Efficient: The lock can recognize 20 fingerprint and the recognition speed is 0.5s. Power Supply: The fingerprint door lock powered by 4pcs x AAA dry batteries(not included), and meanwhile with USB charge port for emergency.With 2 Keys: Each fingerprint lock is equipped with 2 mechanical keys, which will enable users to unlock in traditional method.Biometric lock: Using biometric fingerprint technology, the door can be unlocked by fingerprint in only 0.5s, which is safe and reliable. Large capacity: The smart lock can store 20 fingerprints and can be opened easily and conveniently.Wide range of uses: Made of high-quality aluminum alloy, strong and durable, suitable for families, apartments, personal residences, hotels, etc.