The defendmeª from resqme, Inc. is a sleek personal alarm featuring a siren to maximize attention to yourself when needed for self defense. The loud 120 dB siren can be heard up to 300 feet (100 meters) and will provide a practical protection and deter dangerous threats when seconds count! Attach defendme to any bag, backpack, key chain or purse for easy access. To activate the alarm, pull the lanyard looped to the half circle ring away from the alarm. To stop the alarm, simply place the half circle ring back into the alarm until it snaps into place. The battery can last up to 30 consecutive minutes in total. The stand-by-time is up to 6 months. The defendme is the perfect personal alarm for anyone and particularly for Young People, College Students, Lone Workers, Joggers, Elderly, Nurses/Personal Care Workers, Delivery/Route Employees.