Pet Accoustics Ultra Calmer Canine Stress Relief Sonic Collar A solution for dogs that suffer from anxiety triggered by thunderstorms, fireworks, and noise phobias Ultra Calmer is an alternative to using uncomfortable anxiety wrap for dogs Pre-loaded with Ultra Calming music that calms dog anxious behaviors Includes Magnetic USB charger, Water Resistant, Safe Volume Pet Acoustics is the leader in science-based, frequency modified music proven to calm pets