The smart key box combines the convenience of the Bluetooth Smart App, fingerprint, password, and access card unlocking to simplify access for you and your family and friends. The smart box seamlessly pairs with the Tuya Gateway (sold separately) for remote opening via the smart app, eliminating distance issues and providing control anytime, anywhere. You don't need to be near the realtor's box to access it anytime, anywhere. The smart key box is made of high-quality zinc alloy and solid steel for excellent durability and strength, ensuring protection against hammering and sawing. The portable key box comes with a removable shackle and can be mounted or hung on door handles/fences, providing flexibility to install wherever you want. Powered by 4 AAA alkaline batteries (not included), emergency unlocking via USB port. Capacity Key Box: 2.56 x 4.33 x 1.57 inches (approx. 6.9 x 11.5 cm), meeting multiple needs, including daily use, home services, car services, and real estate operations. Color: Black Material: Metal Package Contents: 1 x Box 2 x Access Control Cards 5 x Silicone Hole Plugs 1 x USB Cable 1 x Removable Shackle Only the above package content, other products are not included. Note: Light reflection and different screens may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.