1、IP65 waterproof and dustproof design. Low battery alarm function, you can query unlocking records and alarm records on the APP. 2、Bluetooth APP unlock, you can use the mobile phone APP Bluetooth to unlock. Long standby time, up to 3 months. 3、Compact, smart and easy to carry, it can record up to 10 fingerprints. It can be applied to dormitory doors, gymnasiums and warehouse doors. 4、Equipped with three‑color indicator lights, different colors represent different states of the device. The device is connected to the USB via a data cable for charging (please fully charge the device for the first use) 5、Fingerprint unlocking, the convenience of keyless can help you get rid of the fear of losing the key or forgetting the combination.