Dazer Ii Ultrasonic Aggressive Dog Deterrent Repeller Stop the dog approaching you before it can bite you Easy to use, just point and push the button - Ergonomical design makes It comfortable to hold in your hand Molded of high impact ABS plastic for durability - Has a belt clip for easy carrying on pocket, purse or workbag Red LED indicator shows battery level and proper function Helps keep other stray dogs away from your own dog while walking