3 IN 1 130db PERSONAL ALARM WITH LIGHT

The first is a standard smart hook that can be used on your belt loop or purse. Second is the window or door alarm attachment that can be used on a window, door, or as a laptop alarm. When the alarm is activated, there is a strobe light to attract attention. The unit also has a button for the flashlight function. It runs off of one 9-volt battery not included.