Powerful anti-theft smart cable lock Auto-unlock - automatically unlock when only you approach your Smart Lock Vibration function - activates alarm when lock is tampered with when you're not in the vacinity Bluetooth Notifications Power notification in APP IP44 waterproof grade, can use both indoors and outdoors Alarm sound up to 110dB, effectively deterring thefts ABS plastic+copper+cable(chain), strong anti-theft high quality material Easy control with APP, you can lock and unlock your bike or motorcycle with your phone (Android 4.3, iPhone4s above systems and Bluetooth 4.0 version) 3 x AAA batteries required (not included) Black only available Bluetooth Smart Lock with Alarm Bicycle Smart Lock Bicycle/Motorcycle Keyless Lock APP Control The Bluetooth Smart Lock has anti cut, anti disassembling, removing alarm and vibration alarm functions. You can lock and unlock your bike or motorcycle with your phone APP. No more losing keys or forgetting combinations - lock and unlock your Bluetooth Smart Lock via your phone with the smart APP. With the optional auto-unlock function, you can unlock your Smart Lock just by being near, or manually unlock it via the APP.