Review on Agitech Sound Personal Alarm Siren - 130dB Keychain Emergency Self Defense Alarm with LED Light - Personal Security Whistle Siren for Women, Kids, and Elderly (Blue) by Travis Oetting

I've always been a bit paranoid who likes to be prepared for anything and I didn't want to carry a gun (e.g. pepper spray) anywhere I went also go, no one went, but wanted to have peace, so the purchase was brainless. Thought I would buy this to put on a cord to carry my keys and wallet on and take with me everywhere. When I first tried it the day I received it I found that the flashlight and alarm clock were completely ineffective so I figured I'd try swapping out the batteries and see if that did the trick Fix problem before I send it back. As soon as I unscrewed the back, the alarm clock and flashlight worked perfectly, and after experimenting I figured the screw was the problem! All of this to the point that if it doesn't work for you, try unscrewing the screw halfway and see if that helps!