Check the listing for details. Multi-Purpose Personal Alarm 130dB ~ Self, Door, Window, Purse, Backpack, Light. Color: Black, Condition: New. Listed at 14.50 USD. Use this alarm for your: Personal Security, Purse/Briefcase/Backpack, Door or Window, Laptop Computer, Cabin and Boat. You can carry this alarm or attach it to your clothing using the clip on the back. Whenever you need help or feel threatened, pull the pin and an ear-piercing 130dB sounds to attract attention to your situation. When the alarm pin is pulled there is a flashing light along with the sound. The unit has a mini flash light. Use this alarm on the fence surrounding the pool, keeping children safe. Use these when you travel, feel more secure in your hotel/motel room. This alarm can be in your Checked Luggage for air travel. Protecting What Matters Most. Requires a 9-volt battery, Battery Is Not Included. 2 1/4" x 2 3/4". Smoke free home. We want our customers happy: check out our photos and email us with any questions you might have. Thanks for visiting our site!