The smart key lock box offers multiple unlocking methods including Bluetooth Smart app, fingerprint, password, and access card for convenient access for family and friends. This smart lockbox works with the Tuya Gateway (sold separately) to enable remote unlocking via the smart app, allowing control from anywhere at any time without the need to be physically near the device. Constructed from high-quality zinc alloy and solid steel, the smart key box provides excellent durability and strength, offering resistance against hammering and sawing. The portable key lock box features a removable shackle and can be mounted or hung on door handles or fences, providing flexible installation options. It is powered by 4 AAA alkaline batteries (not included) and supports emergency unlocking through a USB port. Dimensions: 2.56 x 4.33 x 1.57 inches (6.5 x 11 x 4 cm), suitable for various uses including daily access, home services, car services, and real estate applications. Color: Black Material: Metal Package Contents: 1 x Box 2 x Access control card 5 x Silicone hole plug 1 x USB cable 1 x Removable shackle Only the above package content is included; other products are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement tolerance is +/- 1-3 cm.