Let's talk serious motorcycle security - this heavy-duty chain lock is no joke when it comes to protecting your bike! The chain itself is 3/8 inch (10mm) thick and made from triple-heat-treated manganese steel, which provides incredible resistance against cutting and prying attempts. But the real game-changer is the 110dB alarm that goes off when it detects vibration - loud enough to scare off any thief and alert everyone nearby. The chain is 120cm long, giving you plenty of length to secure your bike to fixed objects. It comes with a soft canvas sleeve that reduces noise and wear on your bike's finish. The misaligned lock design prevents key replication, and the key can only be removed when locked to avoid losing it. You'll need LR44 batteries (not included) that last about 5 months with regular use. Setting the alarm is simple - just press the red button. Unlike some electronic security that can be jammed, this mechanical chain with alarm backup provides reliable protection wherever you park. Whether you're leaving your bike on the street overnight or just running quick errands, this chain lock gives you that peace of mind knowing your investment is seriously protected from theft attempts.