⑤【Durable】REAPP disc lock contains an set of spare batteries. 100DB Motorcycle Alarm Lock Brake Security Safety Siren Lock Anti-theft Alarm Wh The battery is durable and easy to replace. Most cycles, bikes, and E-bikes can be used. Cycle Lock With Reminder Cable Waterproof Bike Lock YOHOOLYO 2-Pack Alarm Disc Lock - 110dB Anti-Theft Motorcycle Lock With 5ft Reminder Cable Disc Brake Lock With Cable 110dB Anti-theft Cycle Lock If the alarm is triggered 10 times a day, the battery life is about 6 months. The cycle alarm lock body is sturdy and well , and can withstand collisions of varying degrees. Waterproof anti-theft disc brake lock, no worry in rainy days. Made of sturdy materials, anti saw, anti shear, and anti-corrosion, perfectly your vehicle. Fits all drilled brake rotors less than 7mm (1/4 inch) thick. It will make 110dB loud sound when built-in sensors detecting shocks and movements. View more After 3 seconds, you will hear a beep and you will enter the alarm mode. REAPP Alar Disc Lock otorbike Lock, Disc Brake Lock 110db with... Built-in sensitive sensor, once it detects vibion or movement, it will emit a sound of 110 DB to stop any thieves who try to move your vehicle or pick the lock. ③【Easy to use】This disc brake lock can be locked by just pressing it.