Description This easy to use bark control collar requires no programming and includes progressive correction. If your dog continues to bark, 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. Key Benefits For dogs 8 pounds and up. 6 levels of progressive static correction with an automatic safety shut-off: correction stops after 50 seconds. Lightweight, waterproof receiver collar. Collar uses PetSafe RFA-67 battery (included). Vibration sensor detects dog's vocal chords moving. Precautions To prevent injury, please refer to product manual for proper fitting instructions and follow all safety precautions. Never attach a leash or tie-out to this collar. Avoid leaving the collar on for more than 12 hours a day.