This personal alarm features a built-in battery and an extremely loud, attention-grabbing sound. It's easy to use and carry, providing a sense of security wherever you go. The keychain design allows you to attach it to your keys, backpack, purse, bag, belt, etc., ensuring a safer journey. The built-in LED flashlight helps you navigate dark areas or during sudden power outages. How to use: 1. Pull out the contact pin from the personal alarm to activate a super loud alarm. 2. Reinsert the pin to stop the alarm. 3. Press the button to turn on the LED flashlight. 4. Release the button to turn off the LED flashlight. ACTIVATE ALARM: Pull out the contact pin as indicated in the user manual. STOP ALARM: Reinsert the contact pin into the device. The contact pin is the on/off switch. Product Specification: Material: ABS and metal Volume: 130DB (approximately) Battery: LR44 x 3 (included) Note: 1. The 130 DB alarm is extremely loud, do not place it near your ears. 2. When the alarm sound becomes low or the light dims, unscrew the screw on the back and replace the battery with new ones. 3. This personal alarm is not completely waterproof, do not put it in water and keep it as dry as possible. 4. This is not a toy, keep it AWAY from children under 3 years old. 5. Do not expose your hearing to this sound for an extended period, as serious hearing loss may result.