110dB Smart Waterproof Pas Bicycle Lock Anti- Alarm Batteries Not Included
- The sound of alarm is over 110 decibels, which can effectively deter thieves.
- Alarm immediately when cutting steel ropes or removing lock screws.
- Four-digit passwords with 256 groups of password combinations.
- Alarm immediately when shaking or moving the lock.
- Alarm immediately if you mistype your password three times.
