Personal alarm is the most recommended gift for your family members, girlfriend, friends who work night shifts or travel alone. Security Alarms: 1. The 140 db decibel volume will instantly grab everyone's attention, even from afar. 2. Perfect gift for elderly parents, women, kids, joggers or anyone who walks alone. 3. The alarm helps you get out of a dangerous situation and chase away attackers when traveling outdoors.Features: Alarm volume: about 140 dB Hardware: ABS+metal Voltage: 4.5 - 6 V Working Current: 100mA Battery: LR44 (5 pieces) Alarm time: 90 minutes Light intensity: 80 lumens Size: approx. 2.76 x 1.77 x 0.98 inch Color: purple, blue, silver, gold, black Quantity: 5 pieces security alarms Suitable range: people of all ages Warm notes: 1. When the alarm sound becomes weak, please remove the screws from the back cover and replace the new batteries. 2. The alarm sound is very loud, please don't put it by your ears. 3. This item is not completely waterproof, please store in a clean, dry place.Package Included: 5 x Personal Alarm 5 x User Manual Note: The data is all manual measurement, please allow 1-3cm error; due to the light and display difference, there would be some color difference, please refer to the actual item received.