Features 15 adjustable levels of static stimulation and 1 tone (beep) level to teach commands and correct behavior. 350m range is best for indoors and outdoor hiking or walking with your dog. Rechargable waterproof collar submersible up to 5' (1,52m) for all of your dog's outdoor activities. Train up to 2 dogs at the same time with additional collars sold separately. Designed for dogs 8-40 pounds. Fits neck sizes up to 22" (55.9cm).