1Anti Loss Function: The product can add the contact information of the owner, and when the key is lost, the person who finds it can contact the owner through the information. 2Long Standby Time: No lacking of power worry, could standby 100 days, keyless entry can be used for 200 days, physical buttons can be used for 365 days, one charge, long use. 3Keyless Door Unlock: When the car owner approaches the car with the key, the door lock will automatically open, and you can enter the car without taking out the key. 4Automatic Lock: When leaving the car with the key, the door locks automatically, and models that support automatic window lift can set the function after the car is automatic locking. 5Frame Material: The technologically sensed bezel is made of zinc alloy, the touch is smooth, and the metal bezel is highly durable, adding a stylish atmosphere.