Feature: Fingerprint unlocking, no need to carry the key, no need to worry about the key being lost or copied by others. You can set 10 sets of fingerprints to unlock for the convenience of family and friends. It is made of high quality aluminum alloy, which is lightweight, strong, corrosion resistant and durable. Suitable for cabinets in dorms, warehouse doors, cabinets, doors, backpacks, suitcases, warehouses and offices. Specification: Article type: fingerprint padlock Color: as shown in the picture! Weight: Approx. 30g/1,1 oz Lock body material: aluminum alloy; Lock Beam Material: Stainless Steel Lock beam diameter: 4 mm / 0,16 inch Lock cylinder: no mechanical lock cylinder Engine: M10 planetary geared motor Working voltage: 3,7 V Battery: 60 mAh 3,7 V lithium battery (built-in battery) Charging current: 5 V/100 ma Continuous standby: 3 months Monit for full charge: red light off Water resistance level: not waterproof Size: 52x27x13.4mm/2.05x1.06x0.53in Low battery alarm: 3,3V LED light: three-color light USB interface: Micro USB 5V 0.5A (emergency charging) (USB cable not included) Application: Dorm cabinets, storage doors, closets, room doors, backpacks, suitcases, warehouses, closets, offices. Package List: 1 x Fingerprint Padlock Fingerprint Fingerprint sensor: semiconductor fingerprint detection technology 120x120, record 5 times and save 10 groups Fingerprint Head Shape: Square 10,4 x 10,4 mm / 0,41 x 0,41 inch Memory capacity: 10 sets of fingerprints Technology: Biometrics First entry of fingerprints (administrator): Long press fingerprint reader. Blue light will light up, release your finger. Start collecting fingerprints, collect 5 times with the same finger, at different angles and in different directions. The red light is on and the collection failed. The blue light is on and the acquisition has been successful. A total of 5 successful collections, the green light is on, and the administrator's fingerprint collection was successful. 1. By default, the first and second fingerprints are the administrator's fingerprints. 2. Taking fingerprints from the second to the tenth requires the authorization of the administrator's fingerprint.