This past Christmas I purchased four siren song keychain safety alarms. I gave three away and kept one for myself. Recently, I pulled the pin by accident when getting my keys out of my pocket book. The siren was so low, I wasn't sure what it was at first. I put new batteries in it, still the alarm is hardly audible. Thank God, I found this out by accident. I was relying on this in case of an emergency. It's a poor product and I'm sorry I gave them as gifts. I will tell the people I gave them to how unreliable it is. I never thought to test it now and them, it was never suggested and since I never used it, I though it would be fine if I needed it. Very unhappy, especially that I gave them as gifts.