Click to enlarge

This alarm attaches to purses, laptop cases, doors, luggage, and more. When pin is pulled, a 100dB alarm sounds for an hour or until the pin is replaced. Portable-take it anywhere you need a little personal protection. Great for joggers, travelers, students, the elderly.
Power supply: 2 1.5V LR1 N-size (included). Sound level: 110 dB (at 12")
Battery life: 60 min (continuous activation).
Dimensions: 2.9" x 2.3" x 0.7"