Feature: 2 unlocking methods: the smart key box supports password unlocking/smartphone Tuya APP unlocking, which is more convenient to use. Key security: Aluminum and zinc alloy key storage boxes are durable and will not be forcibly opened. Small objects such as keys and cards can be stored for convenient and safe access. No need to recharge: The product requires 4 X AAA batteries, please purchase regular batteries by yourself. Convenience and practicality: No need to carry the key when traveling to avoid the risk of losing the key. Wide range of application: suitable for indoor and outdoor use. It is very suitable for decoration companies, homestay apartments, construction sites, families, communities, schools, doorways, etc. Guide with instructions: After you get the key box, please read the instructions. If you don't understand, please contact the store customer service in time. Specification: Name: Tuya Smart Key Storage Box Communication: Password + Mobile APP Material: Zinc Alloy / ABS Color: Black,Orange Power interface: Micro USB Working voltage: 4.5-6 V Battery life: 12+ months Working temperature: -20 - 60 Waterproof grade: IP66 daily waterproof Battery: 4 X AAA batteries (not included). Available (Micro interface, 3.7V) Overall size: 145x105x55mm/5.71x4.13x2.17in Internal size: 112x80x28mm/4.41x3.15x1.1in Weight: 700g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.