Feature:1. Bluetooth Unlocking: Say goodbye to traditional keys with the anti theft motorcycle disc lock that features Bluetooth unlocking for added convenience. Simply use your smartphone to unlock the lock, making it more convenient and secure. Embrace the latest in technology for a stylish and modern locking solution.2. High Security Lock Core: This motorcycle security wheel disc lock provides excellent security, ensuring peace of mind with its drill resistant design. Its advanced locking system offers maximum guard against unauthorized access.3. Automatic Positioning Function: The motorbike wheel brake lock features an automatic positioning function where placing the disc brake lock into the disc brake disc automatically engages the lock. When your smartphone is in proximity, the lock unlocks automatically, and it locks itself when you move away. This easy operating adds an extra layer of convenience and security.4. Alarm System: The motorcycle alarm disc brake lock is equipped with a highly sensitive alarm system that triggers a loud 115dB alarm upon any vibration or movement. The alarm can be immediately disabled through the connected app, providing a powerful deterrent against theft and ensuring your vehicle's safety.5. Good Compatibility: With a lock pin size of 5.5mm, this motorcycle brake disc lock is suitable for all bikes, electric bikes, and motorcycles with disc brake discs. Additionally, the lock can be easily shared with friends through the app without the need for registration, ensuring the guard of your vehicle without compromising customer privacy. The lock's all metal construction is designed to resist prying and smashing attempts, offering excellent security for your valuable possessions.Specification:Item Type: Bluetooth Disk Brake LockMaterial: Zinc Alloy, Stainless SteelBattery Type: Li Battery (Included)Battery Capacity: 350mAhLock Pin: 5.5mm/0.22inAPP Functions: Hand Unlock, Auto Unlock, Vibration Alarm, Notification, Change Password, Change Name, Usage Records.Package List:1 x Disc Brake Lock1 x Charging Cable1 x ManualNote:For Android system above 4.3. However, there may be different user experiences due to diverse brand and model of for Android phones.