Personal alarm is the most recommended gift for your family members, your girlfriend, your friends who work night shifts or travel alone. Safety Alarm: The 140 dB volume will immediately attract everyone's attention, even at a long distance. Perfect gift for elderly parents, women, children, joggers, or anyone walking alone. The alarm helps you get out of a dangerous situation and scare away attackers when traveling outdoors. Features: Alarm volume: about 140 dB Material: ABS + metal Voltage: 4.5 - 6 V Working current: 100 mA Battery: LR44 (5 pieces) Alarm duration: 90 minutes Brightness: 80 lumens Size: approx. 2.76 x 1.77 x 0.98 inches Color: purple, blue, silver, gold, black Quantity: 5 pcs safety alarm Suitable area: people of all ages Warm notes: When the alarm sound gets low, please remove the screws on the back and replace the new batteries. The alarm sound is very loud, please do not put it by your ears. This item is not completely waterproof, please keep it in a clean and dry place. Package includes: 5 x Personal alarm 5 x User Manual