Anti-thief Security Alarm This disc lock Built in internal sensorsCapable of detecting vibration and movement. The 110dB alarm system scares away potential thieves, convenient for bikers while parking outside or at home.Practical use This disc lock made of aluminum alloy, sturdy and durable, Waterproof, high temperature resistant, suitable for outdoor weather conditionsEasy to Use Press the lock core to start the locking operation, no need for a key, 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 7 mm.Package Contents 1 x Alarm Disc Lock (Batteries Included), 2 x Keys, 1 x Hex Wrench, 1 x Waterproof Jump Starter Cable, 1 x Motorcycle Lock Bag li> Product description Anti-thief design This disc lock with 110dB alarm, This motorcycle anti-theft device is equipped with a sensor, the system of 110db alarm scares away potential thieves! Indestructible Motorcycle locks are very sturdy, can withstand the impact of electric drills and other tools, and can safely protect your items. Widely used Suitable for most motorcycles, mopeds, yachts, scooters, sports bikes, racing cars with thickness less than 7mm. Package Contents 1 x Alarm Disc Block (batteries included) 2 x Keys 1 x Hex Key 1x Waterproof Reminder Cable 1 x Motorcycle Lock Bag Premium and waterproof br/> This motorcycle lock is made of aluminum alloy and waterproof material for durable and long service life. When your motorcycle is exposed to wind and rain outdoors, the motorcycle will still work. (It should be noted that if the wind and rain are very strong, the motorcycle lock will sound an alarm due to vibration) Battery Replacement You can easily replace the Lr44 battery with the key provided. Generally, the battery is very durable, and the battery replacement frequency is about 1-2 years.