Features: 2 in 1 Design: Chasing dogs/Light function, with LED flashlight feature is helpful for night time walking or jogging. Portable: Mini anti barking device comes with a lanyard, convenient for you to carry anywhere. Safe and Human: Ultrasound Emitted Training Device uses physical methods to stimulate dogs and has no effect on dog’s health, thus being the most humane way to protect yourself from aggressive dogs. It can also be used as dog training device. Eay To Operate: The device has two modes: Light modes and Chasing dogs. Note: The following conditions had no significant effect of chasing the dog: (1) They are breeding dogs, dog knows that his owner will not hurt him. (2) A dog with the owner or a well-trained dog. (3) When the battery voltage is too low. The ultrasonic energy issued by products will be reduced. At this time, the flash in front will be dimmed, indicating that the battery is low and needs to be replaced. Pet Dog Repellent only,other accessories demo in the picture is not included. Specification: Material: ABS Size: app.10x4.2x3.7cm/3.94x1.65x1.46in Color: White + Black Power: Uses one 9V Alkaline battery(Not included) Sound wave range: Within 15 meters Quantity: 1 Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Pet Dog Repellent