Anti-thief Security Alarm This disc locks Built in sensors inside  Capable of detecting vibrations and movements. The 110db alarm system scares away potential thieves  handy for bikers while parking outside or at home.  practical use This disc lock made of aluminum alloy, robust and durable, Waterproof, resistant to high temperatures, suitable for outdoor climatic conditions  Easy to Use Press the lock core to start the locking operation, no key needed, and 5 seconds later there are beeps to indicate the alarm is activated correctly. Use the key to disarm the alarm.  Widely used Suitable for most motorcycles, mopeds, yachts, scooters, sports bikes, racing cars with thickness less than 7mm.  Package Contents 1 x Alarm Disc Lock (Batteries Included), 2 x Keys, 1 x Hex Key, 1 x Waterproof Starter Cable, 1 x Motorcycle Lock Bag  Product description   Anti-theft design  This disc lock with 110dB alarm, This motorcycle lock is equipped with a sensor, the 110db alarm system scares potential thieves indestructible  Motorcycle locks are very sturdy, can withstand the impact of power drills and other tools, and can protect your items safely.  Widely used  Suitable for most motorcycles, mopeds, yachts, scooters, sports bikes, racing cars with thickness less than 7mm.  Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.