Features: It adopts pulse tone scanning working mode, which generates 125dB strong ultrasonic wave and 2800mcd strong white light, which can stimulate dogs and cats (unheard by human ears) . Role: Used to effectively repel dogs and cats. When using dog training, the ultrasound head emits a relatively weak and stable ultrasound which is used to train Mount Dogs, Military Dogs, and Police Dogs to perform certain actions. can also be used as a flashlight. Shapes: This product has a soft shape and is comfortable. Note: Normally do not take the dog with you to intentionally tease it, so it is not surprising that the dog listens too much. If the light in the dog reader is obviously dim, you need to replace the battery. Quality Assurance: If you are not satisfied with the product, please contact us to ensure the highest quality assurance.