The lock beam is quenched and processed uniquely, and is hardened with thicken shackle, of violent opening, like pliers and crowbars. The lock core adopts the idling lock core, the lock body is precise, rustproof and waterproof, and also breakable. Unique high- function [about 110 decibels], good anti-theft performance, is your anti-theft choice for peace of mind. Features - Color: Black - Material: Zinc alloy - Size: 10.00X7.00X3.00cm/3.93X2.75X1.18in - Lock beam of this alarm padlock is quenched and processed uniquely, and is hardened with thicken shackle , of violent opening, like pliers and crowbars. - The lock core adopts the idling lock core, the lock body is precise, rustproof and waterproof, and also breakable. - Unique high- function [about 110 decibels], good anti-theft performance, is your anti-theft choice for peace of mind. Adopt movement triggered alarm, which can loud sound when the lock is hit or shaken. - Can be used in two ways: mechanical lock and alarm lock. Rotate the lock beam by 180°, and hear a ’ ’ sound to indicate that alarm mode is on. Turn the lock beam back 180° again and there is no ’ ’ sound to indicate that mechanical mode is on. - Can be used on door, window, bicycle, container, , tricycle, pull gate, garden, etc. Package list: 1 x padlock