This easy-to-use PetSafe Basic Static Bark Collar requires no programming and includes progressive correction. If your dog starts barking and doesn't stop, the static correction automatically increases to the next level until he stops. Safe and effective, the collar teaches your dog to stop his annoying barking. 6 adjustable levels of static correction. Vibration sensor detects dog's vocal cords moving. Automatic safety shut-off: correction stops after 50 seconds. Waterproof collar submersible up to 5 feet. Collar uses PetSafe RFA-67 battery (included.) Bark control collars work quickly because they provide consistent correction every time the dog barks; For dogs that are stubborn and bark excessively. Adjustable Collar for neck sizes up to 28in. If you’re not sure which bark control product to choose, contact our Customer Care team Monday through Saturday and we'll gladly help you decide. If this product is not meeting your needs, please contact PetSafe Brand. PetSafe brand has been an industry leading US manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year. Call, chat or email the PetSafe US-based customer care specialists six days a week.