DescriptionThis disc brake lock is built to protect your motorcycles or bikes from potential theft. The lock features anti-theft 110dB audible alarm sound once detecting shocks movements and will then scare away thieves. It's an choice to lock your motorcycles or bikes when parking at home or outsideFeatures- Size: 8.00X6.00X3.00cm/3.14X2.36X1.18 inch. - Material: Steel. - Designed with built-in sensors, motorcycle disc lock can sensitively detect shocks and movements and will then activate up to 110dB loud alarm sound to scare away any potential thieves, a practical choice to prevent motorcycle theft. - Made of solid steel, this disc brake lock is robust and sturdy to protect your motorcycles or bikes against any sawing or prying attempts while parking outside or at home. - It also features waterproof and rustproof design for effective use in bad weather. - Simply press down the button on the motorcycle alarm disc lock, then you will hear a Beep sound, meaning the lock is in alarm mode and your motorcycle is locked safely. - And when it detects any shocks movement it will give off anti-theft alarm, loud enough to warn thieves the motorcycle is alarmed.