[ANTI-THEFT] - alarm lock protects your beloved motorcycle bike from theft when you park or outdoors, with a sound of up to 110dB. Sensitive motion vibration sensors activate an alarm when vibrating to scare thieves from your belongings.[PRESS TO LOCK]- It's easy to lock by pressing the locking mechanism, immediately the brake lock goes into alarm mode. When detects a vibration, it has a triple \beep\ warning to let potential thieves know its . Then if it's triggered again it'll gives off a continuous shrill alarm for about 10 seconds, making your motorcycle a tough target for thieves.[WIDE APPLICATIONS]- Fits the majority of the motorcycles and bikes with disc brakes, where the brake rotor is less than 6mm thick and drilled, perfect active security device for most popular models: for , , Buell,, ,, , and . etc.[ USE]- Comes with 6pcs batteries already installed out. You can use the Hex included to change the batteries in seconds, or just remove the batteries and use it as a conventional lock without alarm.[SOLID & WATERPROOF].Built with alloy aluminum body, sealed against moisture, dust and dirt, motorcycle wheel lock with siren is fully water resistant and drop proof, can effectively protect the interior components and offer long lasting protection.Product Specification:Loudness alarm: 110 decibelsBattery:button battery (include)Steps to Use:1.Press the lock core, it will be locked and you will hear the sound \DU\, which means it is into the alarm status, after 5 seconds, When the lock or vehicle is vibrated, the lock is vibrated again, it will give an alarm and keep alarm with vibration. Each alarm will last for 10 seconds.2.It will cost 5 seconds to open the lock for the owner ,if the lock can't be opened, it will give an alarm. Use the key to open the lock, the alarm will stop at once.3.The Reminder cable\/cord has a loop at each end,to connect your disc lock to your handgrip.It will remind you to remove the lock when you are going to for a ride.Battery ReplacementWhen you hear the sound \ ...\constant voice or the alarm sound less than 10 seconds and stop at once, that means the battery is going to be exhausted and you need to replace them. Please use the Mini Wrench we provided to spin out the fours screw at the bottom,take the and replace the battery. Pay attention to the anode \+\ and cathode \-\.Colour: blackMaterial: metalPackage Contents:1 * Disc Brake Lock2 * Lock KeysOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.