1. Anti-theft alarm cable lock, damage alarm, shear alarm, 110dB alarm 2. Suitable for mountain bikes/touring bikes/off-road bikes/road bikes 3. Locking tone: insert the lock hook into the lock body to make a "B" sound, and at the same time the LED light flashes quickly for 5 times and then turns into a slow flash 4. Material: lock cylinder zinc alloy, lock body: zinc alloy/ABS 5. Steel cable: Iron (wrapped in pvc plastic) 6. Size: length 120cm, steel cable diameter 12mm 7. Weight: 455 grams 8. Power: 2 AA batteries (not included) 9. Comes with 3 keys