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.Item Type: Intelligent Fingerprint LockMaterial: Zinc AlloyColor: BlackFingerprint Sensor Part Size: Approx. 10.4x10.4mm / 0.4x0.4inStorage Capacity: 10 sets of fingerprintsFingerprint Record: Short press to unlock, long press for 3S to set fingerprint, long press for 6S to delete fingerprintBattery: Lithium battery 180mAh 3.7V(Built-in)Charging Current: 5V / 200MAStandby Time: 3 monthsProduct Size: Approx. 91x54x25mm/3.6x2.1x0.9inWorking Temperature: -20 - 70