Item Type: Intelligent Fingerprint Lock Material: Zinc AlloyColor: BlackFingerprint Sensor Part Size: Approx. 10.4x10.4mm / 0.4x0.4in Storage Capacity: 10 sets of fingerprints Fingerprint Record: Short press to unlock, long press for 3S to set fingerprint, long press for 6S to delete fingerprint Battery: Lithium battery 180mAh 3.7V(Built-in) Charging Current: 5V / 200MA Standby Time: 3 months Product Size: Approx. 91x54x25mm/3.6x2.1x0.9in Working Temperature: -20℃ - 70℃ 1、Fingerprint unlocking, no need to worry about losing the key or forgetting the combination. It can be charged by connecting to USB via a data cable (please fully charge the device for the first use). 2、The fingerprint lock can record up to 10 fingerprints, and it can record the fingerprints of your family members and close people, which is convenient and practical. 3、IP65 waterproof and dustproof design, suitable for outdoor use. Long standby time, up to 6 months. 4、Use three‑color indicator lights, the indicator lights are in different colors, and different colors represent different states of the device. 5、Small size, easy to carry, widely used, suitable for home, dormitory doors, gymnasiums and warehouse doors, etc.