Guardian Bark Control Collar: * Correction Starts With A Mild Tingle, With Up To 6 Levels For Successive Barking. * 3 Year Limited Warranty * Correction levels adjust to your dog"s temperament * Adjustable nylon collar * Waterproof and lightweight * LED light indicates when the collar is giving the correction * Uses CR2032 batteries (included) * Anti-bark collar * (2) CR2032 batteries * Operating Instructions