Personal alarm with built - in battery, the alarm is extremely loud and attention - grabbing. it's easy to operate and carry. you'll feel much safer by owning this personal alarm and take it with you anytime and anywhere. The keychain design make you could clip the personal alarm to your keys, backpack, bag, purse, belt etc., you'll have a more safer travel. The LED flashlight design can help you pass through where there is no light or power off suddently. How to use: 1.Pull out the contact pin from the persoanl alarm device, a super loud alarm will be heard. 2.Intert the pin back to the device to stop the alarm. 3.Press the button to turn the LED flashlight on. 4.Release the button to turn the LED flashlight off. ACTVATED THE ALARM: Pull out the contact pin which is indicates in the user manual. STOP THE ALARM: Reinsert the contact pin into the device. The Contact Pin is the on/off key. Product Specification: Material : ABS and Metal Volume: 130DB (Approx) Battery: LR44 x 3 (Included) Note: 1.The 130 DB alarm is extremely loud, please don't put it near your ears. 2.When the alarm sound goes low or the light dimms, please unscrew the screw on back cover and replace the battery in the device with new batteries. 3.This personal alarm is not fully waterproof, please do not put it in the water and keep it in a dry condition as could as possible. 4.It's not a toy, please KEEP IT AWAY from kids under 3 years old. 5. Do not expose your hearing to this sound for an extended period of time, otherwise severe hearing loss can be a result. Products from GuanGuan's store