(Make Thieves Fear Anti-theft Alarm Lock) YOHOOLYO Alarm Disc Lock is a practical solution for bikers to protect their beloved motorbikes or bikes while parking outside or at home (Crash-resistant Disc Lock) This disc brake lock is constructed with forged stainless steel and easy to lock with one-press operation,just push down the button with a“Beep”sound into alarm status (Waterproof 110 DB Alarm Disc Lock)Up to 110 db alarm will automatically activate upon sensing any vibration or shock. With waterproof function,keep working in rainy days and never get rusty (Double Assurance Disc Lock for Vehicle) It comes with two keys, it is ideal for motorcycles, bicycles, scooters and any vehicle where there are holes or spokes on a wheel (Sustainable Two Set Batteries and Portable Lock) 6 internal batteries and 6 back up for longer use. An Allen wrench to disassemble the lock and carry pouch for storage included.2 pcs security keys for every different lock with well-packed box