Mace Brand 80739 Personal Alarm Key Chain (Red)

• Emits loud 130 dB siren-like sound to scare off attacker and draw attention of others;• Compact, safe, and easy to use ;• Legal in all 50 states; TSA-friendly for carry-on luggage;• Operates with the simple push of a button; deactivation button on rear of unit;• Backup whistle is built into the base of the alarm unit;• Built-in key chain so you can attach it to your keys, belt, or bag;• Dimensions: 3 in. x 1.5 in. x 0.75 in.;• Includes three 1.5-volt AG13/LR44 batteries;• Red;