Protect your valuables with this smart product! A padlock with a built-in powerful alarm that warns when the lock has been tampered with. The 110 decibel siren sounds for ten seconds and sounds again when pressed again. Made of stainless steel, highly unbreakable. It can be used both as an alarm lock and as a regular lock. - Approximate dimensions: 10 x 9.5 x 3.6 cm - 3 keys - When replacing the battery: 2 screws inside the lock - Batteries: 6 LR44 batteries not included (demo batteries included) Large padlock with alarm Secure your home with a built-in powerful alarm that warns if the lock has been tampered with. A powerful alarm is built in to warn if the lock has been tampered with. The 110 decibel siren sounds for ten seconds and sounds again when pressed again. Made of stainless steel, very unbreakable.