Micro Anti-Theft Alarm Its an alarm you attach to your case, luggage, laptops. It will make alarm sound and give off warning light when the thieves attempt to take these things. It works on the principle of electronic balance. Stick the sensor alarm on the top of the case. When the case is out of your hand while you are fully engaged, switch it on. When the thieves move it, it will draw your spontaneous attention and people around. Its proven to stop theft. Product Feature: 1. Light and compact design (12.5g) 2. Size: Length 63mm X Width 21mm X Thickness 13mm 3. Easy to use and no side effect to human being. 4. With button cell equipped inside 5. With LED warning lighting system 6. CE certificated