“Product description Size: 3725100mm Color: gray Material: ABS Package content: 1dog repeller 1USB data cable 1lanyard 1Instruction 1.【Updated Effective Sonic Bark Deterrents】 Updated Dog Bad Behavior Control Device is equipped with two ultrasonic frequency modes - variable and fixed frequency mode, which makes it easier and more effective to get the dog’s attention and correct the dog’s wrongdoing. Safe and humane animal corrector. 2.【Easy to use with one button】 Easy to train with one button. If the dog barks, digs, fights, eats unsafe food, etc., just push the button and point it at the dog. The LED indicator lights up green when the device is working and sending out ultrasound. 3.【Lightweight and portable】 The dog training device is portable and hand-held. You can slip it in your pocket or pocket and are great for both indoor and outdoor use. It also prevents other dogs from approaching you while jogging, walking, or running. 4.【Long control range and USB rechargeable