Dogtra sistema de collar con control remoto ARC para entrenamiento de mascotas color negro, NegroERGONOMIC DESIGN: The design of the ARC receiver is sleek and slim, which allows the collar to strap around the receiver and your dogs neck seamlessly. Itll be a comfortable fit for your dog, while also being hardly noticeable. FULLY WATERPROOF SYSTEM: The ARC transmitter and receiver are both fully waterproof. Whether youre out near a body of water or stuck out in the rain, you wont have to worry about it malfunctioning and can tackle any