Personal alarms are the most recommended gift; for family members, girlfriends, friends who work at night or travel alone. 1. 140 db decibel volume will immediately catch everyone's attention, even from a distance. 2. Perfect gift for elderly parents, women, children, joggers or anyone walking alone. 3. The alarm helps you get out of a dangerous situation chase attackers when traveling outdoors. Features: Alarm volume: approx. 140 dB Material: ABS + metal Voltage: 4.5 - 6 V Working current: 100 mA Battery: LR44 (5 pcs) Time of day alarm: 90 minutes Intensity; luminous: 80 lumens Size: approx. 2.76 x 1.77 x 0.98 inches Color: purple, blue, silver, gold, black Quantity: 5 pieces safety alarm Suitable range: people of all ages Warm notes: 1. When the alarm sound becomes weak, remove the screws from the cover and replace the new batteries. 2. The alarm sound is very loud, please do not put it through your ears. 3. This item is not completely waterproof, store in a clean and dry place. Package included: 5 x Personal alarm 5 x User manual