Specification:Material: aluminum alloyColor: Black, RedUser capacity: 10 groupsPower supply: microUSBUnlocking mode: single unlocking modeUse time: 30 minutes for charging, 1000 times for useSize: (L)X(W)X(H) 40X12X50mm /1.57”X0.47”X1.97″(appr.)Features: Matte texture highlights quality. Multiple fingerprints can be set. No need for a key, one touch opening. Convenient charging wherever you go. Low power consumption, long-lasting life. With fast processing chip, high sensitivity, fast recognition. Lightweight and portable design, widely used in luggage, backpack, bike, drawer, cabinet door, etc.INSTRUCTION:1. Registered administrator: Press and hold the fingerprint piece for 3-6 seconds, the green light flashes, release the hand, then use the finger that needs to be registered to successfully press 10 times, the green light is always on, and the buzzer is DI long sound (Note: you must press 10 or more times to succeed)2. Register the ordinary user: Press and hold the fingerprint piece for 3-6 seconds, the blue light flashes, release the hand, press the administrator fingerprint, verify the pass, the green light flashes, use the finger that needs to be registered successfully, press 10 times, the green light is always on, the bee Sounder “DI” long sound3. Restore the factory settings: long press the fingerprint piece for more than 6 seconds, the red light flashes, and the buzzer sounds 3 times. Release your finger, press the administrator’s fingerprint, pass the verify, the green light is always on, DI long sound, and the factory is restored successfully.4. Unlock: Press any fingerprint to unlock in the factory setting state. After registering the fingerprint, press the registered fingerprint, the green light is on, and the lock is unlocked.Package included:1 X Fingerprint Lock1 X USB Cable1 X Gift Box(Instruction is not included. Any questions, please contact us immediately for solution.)