The personal siren is the most recommended gift; suitable for your family, girlfriends, friends who work at night or travel alone. Security alarm: 1. The 130-135 dB volume in decibels will immediately catch everyone's attention, even from a distance. 2. Perfect gift for elderly parents, women, kids, joggers or anyone who walks alone. 3. The alarm clock helps you; Get rid of dangerous and serious situations; Pursue attackers when they are serious; : 5 pieces Suitable range: People of all ages Warm Tips: 1. When the alarm sound becomes weak, please remove the screws on the back cover and replace with a new battery. 2. The alarm sound is very loud, please don't put it in your ear. 3. This product is not completely waterproof, please store it in a clean and dry place. The package contains: 5 x Personal Siren Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be some difference in color, depending on the physical object received Delivery Quantity: (according to the main image)