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. Package contents 1 x Alarm Disk Unit (batteries included) 2 x Keys 1 x Hex wrench 1xWaterproof Booster Cable 1 x Motorcycle lock bag Premium and waterproof This motorcycle lock is made of aluminum alloy and waterproof material for durable and long lasting, when your motorcycle is exposed to wind and rain outside, the motorcycle will still run. (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 supplied key. Usually the battery is very durable and the frequency of battery replacement is about 1 to 2 years.