PetSafe Vibration Dog Training Collar with Remote 16 levels of vibration stimulation and 1 tone (beep) level to teach commands and correct behavior 100 yard range is best for indoors and small outdoor spaces Waterproof collar and digital handheld remote is durable for your dog's outdoor activities Adjustable, replaceable nylon collar designed for dogs 8 pounds and larger. Fits neck sizes 6 - 28 inches Uses replaceable CR2032 coin cell batteries and a 6v alkaline battery (included) Call, chat or email the PetSafe US-based customer care specialists six days a week