Review on 🔐 Safesound Personal Alarm Keychain by WETEN: 130 dB Self Defense Sonic Protection Device with LED Light - Emergency Siren Song Alert for Women, Kids, Seniors, Joggers (Multicolor) by Kenny Sarma

It's very loud, which comes in handy in a hostile environment! Unless it stops when I put the pen back in and try to stop it and after a few minutes my brain is shaking at the volume :) That's a really good idea and it will shock everyone and give you those extra seconds give. it could save your life. The execution could probably use more work. The siren went on and didn't stop no matter what. As I brought it closer to my eyes to see how to open it, I thought I was going insane (it's very loud). You will need a screwdriver to get to the battery (to stop it). After a few minutes it stopped on its own. Not checked since then. I really like this idea but I don't know if it works properly when I need it.