Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

1，Material:Using high-tech integrated circuits and digital sensor chip2，Lightweight and convenient3，Usage Scope : bicycles， electric cars， tricycles， pull the gate and so on4，Keep your essentials safeSelling Point : The false alarm rate and static power consumption is the lowest in the same lock.Function : The system uses a piezoelectric buzzer， when the theft are leveraging or hitting or knocking the lock. The alarm will be issued immediately high-decibel alarm to drive the thief away. How to use : Set Alarm Lock : First Insert the key and rotated to open the lock then put lock rod with a concave groove towards the key port down. When you hear the sound "di" that means the lock is coming into alarm situation， after 5 seconds， When the lock is vibrated again， it will give an alarm and keep alarm serial movement or vibration and each alarm will last 10's. After the vibration， you can sound the three- Warning tone. Setting Mechanical Lock : Insert the key to open the lock rod then insert the lock eye in the opposite direction that the mechanical lock is ok. (Mechanical lock body with inner pressure side column + external pressure cylinder lock.) Package include:1 x alarm lock6 x cell button batteries3 x keys1 x user's manual