Specifications: 1.Material: ABS 2.Color: yellow 3.Frequency:35-45Hkz 4.Size: 11x4x2cm(1cm=0.39inch) 5.Power: Uses One 9V Alkaline Battery(Not Included) 6.Quantity: 1 Pc Instructions: 1. Dog Training: Turn The Function Switch On The Lower Part Of The Product To The Middle Position, And Press The Button Switch Beam On The Upper Part Of The Product. 2. Drive The Dog: When Encountering An Evil Dog, Turn The Function Switch To The Last Position, Point It At The Evil Dog, And Press The Beam Button Switch. 3. Lighting: Turn The Function Switch To The First Position And Press The Beam Button To Use It As a Flashlight. Note: 1. It Is Best Not To Deliberately Tease The Dog With a Dog Drive, Because It Is Not Surprising That a Dog Listens Too Much. 2. When The Light In The Dog Drive Is Obviously Dim, The Battery Should Be Replaced In Time. 3.Please Allow 0-3cm Error Due To Manual Measurement. Pls Make Sure You Do Not Mind Before You Bid. 4.Due To The Difference Between Different Monitors, The Picture May Not Reflect The Actual Color Of The Item. Thank You! Package Contents: 1 Pc x Dog Repeller