Anti-theft for bicycles and door locks! Security alarm with a loud 110dB alarm to deter thieves. Easy-to-use padlock type with 3 keys and batteries included. ◇ Alarm Lock ● Ideal for preventing bicycle theft and securing warehouses! This is a security item equipped with an alarm device. It looks and works almost the same as a regular padlock, so it's easy and simple to use. ● The alarm activates if someone tries to remove it! When strong vibrations are applied, a small "beep" warning sound is emitted, and if this is repeated several times, a loud alarm will activate! You can switch the alarm ON/OFF by reversing the U-shaped part. ● Safe structure that is difficult to break The battery cover is removed by loosening the screw inside the hole where the U-shaped part is inserted. Since the cover cannot be removed without removing the key, there is no need to worry about the key being broken after the battery is removed. Size: Approximately 11cm high x 9cm wide x 3.3cm thick Accessories: Spare batteries included, 3 keys included * The batteries are for testing purposes, and the remaining charge may be low. We cannot accept returns or refunds for battery defects, so please understand. 2 sets for 3850 yen If you wish to purchase, please comment.