Smart is the key.Bike security gets smart. The use of innovative technology, combined with maximum mechanical security, makes the 770A SmartX™ the most secure bike lock in its class.Enjoy the benefits of the innovative SmartX™ cylinder and make your iOS or Android smartphone your individualized key. Combined with the proven 100 dB alarm, this lock offers maximum security for high-quality E-bikes and load-carrying bicycles.Technology:13 mm hardened square shaft parabolic shackle,SmartX™ locking system with Bluetooth – high-quality, keyless locking offers user-friendly operation,Alarm function with at least 100 dB for 15 seconds followed by automatic reactivation,3D Position Detection – detects vibrations and the smallest movement in all three dimensions and triggers the alarm,Smart alarm – the lock only emits a small warning beep in the event of minor and brief vibrations, e.g. if a football bounces nearby,USB-C port,App connection,Location storage of the bike\'s last parking location,ABUS power cell technology offers the highest level of protection against impacts and attempts to break open the lock,The shackle, the housing and the locking mechanism’s load-bearing parts are manufactured from specially hardened steel.