The BP-504 Barkless Pro Anti-Bark Collar uses our proprietary ABST technology (Advanced Bark Suppression Technology) to control nuisance barking while allowing for protection barking.  Choose the stimulation level and sensitivity level best suited for your dog.  Full one-year warranty.  Assembled in the USA

• 3 Sensitivity Levels
• 9 Stimulation Levels
• Automatic mode
• Optional warning tone
• Rechargeable Lithium=Polymer battery will last days between charges
• 2-hour quick charge