Collar de corteza de perro – Collar antiladridos inteligente con control de corteza, sonido efectivo, vibración y 7 niveles automáticos de forma de choque con indicador LED, fácil de usar, no bloquea el cuello2 HUMANE TRAINING MODE & 5 SENSITIVITY LEVEL IN 1 COLLAR This humane dog bark collar provides 2 extremely efficient and safe training modes (vibration and shock modes) for you to solve an uncontrollable dog's barking problems. It is extremely easy to transfer between these two modes by simply pressing 1 button. You can also set the sensitivity level of this shock collar for dogs, making it an especially customize bark collar that fits your dog well