Alarm Disc Lock 110dB Anti-Theft System

Alarm Disc Lock 110dB Anti-Theft System MYKA0285 Alarm Disc Lock 110dB Anti-Theft System (6mm pin) + Free 4' cable reminder. Durable and Waterproof Made in waterproof aluminum alloy case, the inner silicone rubber gasket on the edge of the alarm device effectively keep out the rain or splash.  How to use:  1. Press the lock button to lock the disc brake, and you will hear the sound "beep". When the lock is vibrated the lock will give off an alarm "beep beep beep" 3 times in case this is just a bump. When vibrated again will give off a continuous shrill alarm for 10-12 seconds. And it keeps alarm with serial vibration. 2.The Reminder cable/cord has a loop at each end to connect your disc lock to your hand grip. It will remind you to remove the lock when you are going out for a ride. Battery Replacement When the lock no longer makes sharp alarms sounds, instead produce constant sound "Ge Ge Ge…", that means the battery is going to be depleted and you need to replace them. Pl