ELECYCLE Bluetooth Smart Lock with Alarm Bicycle Smart Lock Bicycle/Motorcycle Keyless Lock APP Control 1.Powerful anti-theft smart cable lock : Anti cutting ,Anti disassembling, Removing alarm ,Vibration alarm 2.Durable and safe : IP44 rating waterproof function , up to 110dB alarm sound 3.Good quality :ABSplastic+copper+cablechain, strong anti-theft matterial 4.Perfect for everyone - fits all bikes,motorcycles ,quick and easy to use . 5.amazing easy to use lock with APP Control! Just lock and unlock your bike or motorcycle with your phone (Android 4.3 and iPhone4s above systems)