It is made of premium aluminum alloy material, strong and has a . This black padlock combine the lock function with the alarm function to achieve a comprehensive anti-theft, so that you can be more assured, it will from loss. Features - Color: Black. - Material: Aluminum alloy. - Size: About 10.00X9.50X3.20cm/3.93X3.73X1.26inch. - Made of materials, it is strong and will not be easily damaged. - This kind of padlock has a alarm, which produces a loud sound when alarming. - The design of this alarm padlock is simple but very practical. - Suitable for most motorcycles, bikes, containers, doors, sliding doors, windows, etc. - Padlock with multiple uses has mini appearance, easy to carry, with 3 keys. Package list: 1 x Security Alarm Lock 3 x Keys 6 x Electronics