[The thiefs nightmare] alarm disk lock is necessary for indoor and outdoor motorcycle motobike and bike anti-theft. Built-in sensitive sensor, once it detects vibration or movement, it will emit a sound of 110 DB to stop any thieves who try to move your vehicle or pick the lock. [Lock cylinder Key]This motorbike lock is equipped with our self-developed aluminum alloy cylinder and copper key, which is smoother than ordinary round hole keys of other brands. The motorcycle alarm lock body is sturdy and well sealed, and can withstand collisions of varying degrees. Dont worry about using it under rain or other extreme weather. [E to use]This disc brake lock can be locked by just pressing it. After 3 seconds, you will hear a beep and you will enter the alarm mode. A reminder rope is attached to remind you to remove the lock before riding. [Wide application range] motorcycle lock is suitable for all vehicles equipped with disc brake pads. Most motorcycles, bikes, and E-bikes can be used. [Durable] motor disc lock contains an extra set of spare batteries. The battery is durable and e to replace. If the alarm is triggered 10 times a day, the battery life is about 6 months.When you press the lock cylinder and the device keeps making a sound of Ge Ge Ge, it reminds you that the battery is exhausted and you need to replace the spare battery we provide.