1.Tuya Bluetooth settings password, can also be unlocked with your phone 2. Strong Waterproof Performance:Aluminum alloy material, 304 stainless steel, thickened and hardened, not easy to rust; Waterproof grade up to IP67, can be used normally even in rainy weather. 3. Convenient Unlocking:.Password unlocking (1-9 digit keys, 6 digits, 10 sets of passwords) 4. Strong Battery Life: 400mAh CR2032 * 2 button batteries, easy to exchange, ultra long to use, can be used for one year after replacing the battery (please remove the plastic film on the battery before use) 5. Suitable for Multiple Scenarios: Very suitable for house Unlock type:B: Password Colour:black Material:Aluminum alloy Package Contents: 1 x lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Home Securit Lock SmartLock Keyless Fingerprint Lock