Siren lock with hardened anti-cut, anti-twist shackle. Waterproof, siren alarm under water. Strong body, CE, ROHS CERTIFICATED. Siren lock (alarm lock, siren alarm lock, siren alarm padlock, siren padlock, alarm padlock, motorcycle alarm lock, security lock, safety lock ) Lock Specifications: 1.Alarm sound:.110dB siren 2.Alarm system.Alarm under water, waterproof .Auto-alarming system & locking ...