personal Alarm Is The Most Recommended Gift; For Family Members, Girlfriend, Friends Who Work Nights Or Travel Alone.1. 140 Db Decibel Volume Will Instantly Grab Everyones Attention , Even From Afar.2. Perfect Gift For Elderly Parents, Women, Children, Joggers Or Anyone Who Walks Alone.3. The Alarm Helps You Get Out Of A Dangerous Situation Hunt Attackers When Traveling Exterior.features: Alarm Volume: Approx. 140 Db Material: Abs + Metal Voltage: 4.5 - 6 V Working Current: 100 Ma Battery: Lr44 (5 Pieces) Time Of Day Alarm: 90 Minutes Intensity; Luminous: 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 AgesWarm 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 Do Not Put It Through Your Ears. 3. This Item Is Not Completely Waterproof, Please Store In A Clean And Dry Place. Package Included: 5 X Personal Alarm 5 X User Manual