Frequently Asked Question: How to do if the fingerprint can't be identified? Usually due to fingerprint wear, peeling, scratches, dirty, wet fingers, or fingerprint collection window with smudginess and water droplets, fingerprint identification is not successful. It is necessary to ensure that the fingers and fingerprint window are clean and dry . In case of finger scratches, it is recommended to enter at least 3 fingerprints registration after purchase.How many fingerprints can be registered? 10 fingerprints can be registered .How to do if the battery is dead? Connect the charging port with Micro-USB, the red light is on, indicating that it is charging, and it can be unlocked normally during charging. The light is off, indicating that it is fully charged.How long does it continue after being fully charged? After being fully charged, it can stand by for 12 months, and when the power is low, the red light flashes after unlocking.Any fingerprint can be unlocked. When the fingerprint is not recorded, any fingerprint can be unlocked. If fingerprints are recorded, only the recorded fingerprints can be used to unlock the lock. Therefore, under normal circumstances, you must record more than two fingerprints to prevent the embarrassing situation of the fingers being scratched and unable to unlock.Cannot unlock when the battery is exhausted. When the fingerprint is not recorded, any fingerprint can be unlocked. If fingerprints are recorded, only the recorded fingerprints can be used to unlock the lock. Therefore, under normal circumstances, you must record more than two fingerprints to prevent the embarrassing situation of the fingers being scratched and unable to unlock.Colour: SilverMaterial: zinc alloyPackage Contents:1 x fingerprint padlock1 x USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.About UsWe provide the good product with the best price,we support Wholesale/Drop Shipping Order1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.About Shipments1.We will send out the orders ASAP once your payment is completed normally.2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.About After-sale ServiceWe are reliable seller and we have our professional after-sale service for all of our customs. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.About Feedback1. Please check the package and item when you get carefully to make sure there is no problem.2. If you have any problem or are not entirely satisfied with your package,please don’t be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.11682. If there is no problem, please leave us five star positive feedback.Your affirmation is our greatest motivation.