Functions When in danger or emergency, just pull out the pin on the part, it will alarm loudly immediately ; meanwhile the LED fooling flash, yourself against intruders / attackers. It is widely for night walking ladies, student or elder people who living alone. Our so portable and cagy, uncomplicated to operate. Our ? . Made of biology ABS material, it is and long-lasting. . 130 dB safesound alarm call for assistance in an emergency and helps deter the attacker. . unequaled and classy, no one suspects it is an alarm. . pleasant, good enough gift for your friend and lover. How to use it. Please out the insulation sheet before you use it. . . out the pin keychain on the part of the equipment, it alarms immediately and flashes. . . Insert the pin, it alarm. Hold the button, fooling on, release it, LED fooling off. The private alarm healthy is adequate to draw attention for assistance, arduous to ignore. 1. When the alarm healthy goes low , please screws from posterior cover and replace red-hot batteries. Do n't centenarian and red-hot or another battery types, and please replace all battery at the identical time. . . It not completely waterproofed, please the water and make it in a arid condition as realizable. . . The actualized maybe slightly various from the picture shown collect to lighting and the color setting of each one-on-one monitor. Allow the Slight Color Difference. . . Our product has been, but the instructions are 120 dB and the actualized healthy is 130 dB. Specification : Environmental ABS Batteries : Requires 4 × LR44 alkaline batteries -LRB- included -RRB-. Product : -LRB- length * width * height -RRB- 57 * 59 * 23 mm Package includes 1 x private Alarm 1 x User manual .