* We protect our most valuable possessions with an alarm system, so why not our bike?* Hardened 12 mm round shackle* The shackle, the body and the load-bearing parts of the locking mechanism are manufactured using specially hardened steel* Special, modern design of the lock body casing allows for optimum handling* High-quality locking cylinder for high protection against manipulation, e.g., picking* Alarm at a volume of at least 100 dB for 15 seconds, followed by automatic reactivation* 3D Position Detection detects vibrations and the smallest of movements in all three dimensions and triggers an alarm* CR2 batteries included