Anti-thief Security AlarmThis disc lock Built in interior sensorsAble to detect vibration and movement. 110db alarm system scares away potential thievesconvenient for bikers during parking outside or at home. convenient useThis disc lock is made of aluminum alloy, sturdy and durable, Waterproof, high temperature resistant, suitable for outdoor weather conditions Easy to UsePress the lock core to start the lock operation, no key needed, and 5 seconds later there are beeps for indicating the alarm is activated correctly. Use the key to disarm the alarm. Widely UsedSuitable 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 Wrenches, 1 x Hex Wrench, 1 x Waterproof Jumper Cable, 1 x Motorcycle Lock Bag Product Description Anti-thief design This disc lock with 110dB alarm, This motorcycle lock is equipped with a sensor, the 110db alarm system scares away potential thieves indestructible Motorcycle locks are very sturdy, can withstand the impact of electric drills and other tools, and can protect your items safely. Widely used Suitable for most motorcycles, mopeds, yachts, scooters, bicycles sports, racing cars with a thickness of less than 7 mm. Package content 1 x Alarm Disk Block (batteries included) 2 x Keys 1 x Hex Wrench 1x Waterproof 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 work. (Note 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.