[3-in-1 unlocking methods] This smart door lock supports three unlocking methods: fingerprint recognition, app Bluetooth unlocking (within 15 meters), and spare key unlocking. No more worrying about being unable to return home because you forgot your keys. 360-degree fingerprint ID enables easy one-touch unlocking in just 0.3 seconds. Ideal keyless entry door lock for gates. [Smart Control with App] The smart door lock can store up to 100 fingerprints and allows easy management through a smartphone app. Add or delete users, set auto-lock time to approximately one minute, and check unlocking records to monitor who enters and exits your home. View the battery status of the door lock at any time. [Auto-lock and One-touch Lock/Unlock] This smart door lock features an auto-lock function that automatically locks the door after a set period, helping ensure home security even if you forget. The one-touch lock/unlock function allows quick and convenient operation with just a single press. [Safe and Easy to Install] This smart deadbolt can be installed easily with a screwdriver in minutes. Fits most standard US doors and can replace existing door locks. Constructed with zinc alloy for outdoor durability, while the indoor unit features a solid ABS cover for enhanced reliability and security. Power Supply: 2 x AA batteries (batteries not included) Color: Black Material: Zinc alloy + ABS Package Contents: 1 x Front lock 1 x Rear lock 2 x Keys Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.