High-quality anti-theft disc lock with 110 dB alarm Alarm function: The motorcycle disc lock features a built-in alarm that activates a 110 dB sound when movement or vibrations are detected. This loud alarm helps deter potential thieves and draws attention, enhancing the security of your vehicle both at home and in outdoor locations. Robust and waterproof design: Constructed from high-quality stainless steel with a sealed aluminum housing, the lock is resistant to moisture, dust, and dirt. This ensures long-term protection of internal components and reliable performance in extreme weather conditions. Easy to use: The disc lock operates without a keysimply press down the cylinder to engage the lock and activate the alarm system, confirmed by an audible signal. If movement or vibration is detected, the device emits three warning sounds before triggering the full alarm. Versatile compatibility: Designed to fit most motorcycles and bicycles with brake discs under 7 mm thick. It is also suitable for e-bikes, scooters, sports bikes, and mountain bikes, offering broad application and reliable protection across various vehicle types. Long-lasting battery and maintenance: Includes an integrated AG-13 button battery. When a continuous clicking sound is heard, the battery should be replaced. Replacement is simple using an Allen key to remove the top cover. The lock can also function as a standard disc lock without the battery, providing continued security. Package includes: 1 x disc lock, 2 x keys, 2 x waterproof membranes, 1 x cleaning cloth Note: The lock comes with an AG-13 battery. If a continuous clicking noise occurs, the battery is low and should be replaced promptly by loosening the screws and removing the top cover. The disc lock with 110 dB alarm provides theft protection through motion and vibration detection. Made of stainless steel with a sealed aluminum housing, it is waterproof and shockproof, protecting against moisture, dust, and dirt. Key-free operation by pressing the cylinder activates the alarm system. Suitable for motorcycles, e-bikes, bicycles, and scooters with brake discs under 7 mm. Includes AG-13 battery for alarm function and can be used as a standard disc lock without power.