BARK LIMITER XS Eliminate nuisance barking.  Waterproof, lightweight and durable.  Designed for a comfortable and correct fit with 5 intensity levels -- set instantly with a button.  Easy to see light confirms on/off.  Bark Odometer^TM "counting feature" reports correction activity.  Bark sensor is internal and protected from damage.  Choice of contact point length to assure proper contact for short and long coats.  Battery-saving "sleep mode".  One replaceable lithium battery (included) -- battery will last a year in normal use.  30-day money-back guarantee / 1-year warranty