?Terminator Thief? : Motorcycle disc lock is used to protect motorcycles and bicycles while parking outdoors or at home. It works through interior sensors that detect vibrations and movements, with a 110db siren, which threatens potential thieves! ?Always Keep Vigilance? : If your motorcycle is hit by a small collision, the motorcycle lock will emit 110 beeps and 3 beeps as a warning. If the problem persists, the alarm will sound 10 times. When you hear 10 beeps, it is a danger signal and you should be careful. ?Long Service Life?: Made of aluminum alloy, sturdy and durable, this block motorcycle disc is up to the task of resisting multiple types of aggression. And it is pre-equipped with 6 LR44 batteries, which last for 8-10 months. In addition, we offer replacement batteries. ?Double Assurance to Remind You?: With a bright color and a reminder cable, this alarm disc unit reminds you to lock it when you leave your motorcycle or bicycle . And it reminds you to remove the motorcycle