Dispositivo antiladridos de MEIREN, repelente de perros de mano y ayuda de entrenamiento con linterna LED, dispositivo de control de corteza ultrasónicoMULTI FUNCTION DEVICE Except as a pet training tool, it also can prevent you from dog attacks, fit for training many kinds of dogs, such as pets, dogs in police and shepherding. Also can be used as LED light, suitable for outdoor work, travel and security night patrol. HANDHELD DOG TRAINER Dogs will learn to stop barking and all other unwanted behavior by associating disobeying with getting bombarded with this harmless sound. Deter unwanted behavior